Assume that blood pressure readings are normally distributed with a mean of 125 and a standard deviation 4 probability that their mean blood pressure will be less than 127. a) 0.0070 b) 0.6681 c) 0.8245 d) 0.9930

Answers

Answer 1

This value is the same as the value found in the z-table: P(X < 127) = 0.6915 The closest answer to this value is option (b) 0.6681.

We'll use the z-score formula and a standard normal table (z-table) to find the probability.

The given terms are: - Mean (μ) = 125 - Standard deviation (σ) = 4 - Target blood pressure (X) = 127

Step 1: Calculate the z-score using the formula: z = (X - μ) / σ z = (127 - 125) / 4 z = 2 / 4 z = 0.5

Step 2: Use a z-table to find the probability that corresponds to the z-score. In this case, the z-score is 0.5. The value found in the z-table for a z-score of 0.5 is approximately 0.6915.

Step 3: The probability that the mean blood pressure will be less than 127 is the area to the left of the z-score (0.5) in the standard normal distribution.

This value is the same as the value found in the z-table: P(X < 127) = 0.6915 The closest answer to this value is option (b) 0.6681.

Learn more about z-score,

https://brainly.com/question/28000192

#SPJ11


Related Questions

solve this problem and I will give u brainlist!

Answers

Answer:

32.16 degrees

Step-by-step explanation:

The angle of depression in these problems is always the same as the angle of elevation.

With that in mind, lets solve this problem.

So we are given 2 triangle lengths. The Hypotenuse is 898 ft, and the height of your triangle is 478 ft.

There are three trig functions, sine, cosine, and tangent, but we will be using sin for this triangle because he have the opposite side to the angle(see how the side labeled 478 ft is opposite to the angle of elevation?) and the hypotenuse.

Sin is defined as opposite/hypotenuse.

Now, we make our equation:

sin(478/898) = x

x is your answer, just plug it into a calculator.

You get 32.16 degrees

Determine whether the integral is convergent or divergent. If it is convergent, evaluate it. (if the quantity diverges, enter diverges. ) [infinity] 0 1 6 1 x dx

a. Convergent

b. Divergent

Answers

The integral ∫[0,6] 1/x dx is divergent, An integral is said to be divergent if it does not have a finite value.

The given integral is:

[tex]∫[0,6] 1/x dx[/tex]

We know that the integral of 1/x is ln(x), and the antiderivative of ln(x) is xln(x) - x.

So, applying the limits of integration, we get:

[tex]∫[0,6] 1/x dx = ln(x)|[0,6] = ln(6) - ln(0)[/tex]

The natural logarithm of zero is unclear, so the indispensably isn't characterized at x = 0. In this manner, the indispensability is unique.

An integral is said to be divergent in the event that it does not have limited esteem. In other words, on the off chance that the fundamentally does not meet a genuine number, it is said to be unique.

There are a few reasons why a fundamentally may be unique. A few common reasons incorporate:

The integrand gets to be unbounded at a few points inside the limits of integration.

The integrand does not approach zero as the constraint of integration approaches boundlessness.

The limits of integration are interminable, and the integrand does not merge to a limited esteem as the limits approach interminability.

When an indispensably is disparate, it implies that the zone beneath the bend is interminable or does not exist.

This could have imperative suggestions in ranges such as material science and designing, where integrands are utilized to calculate amounts such as work, energy, and a liquid stream. 

Thus, the answer is (b) Divergent. 

learn more about divergent integral

brainly.com/question/30726405

#SPJ4

10. solve the following absolute value equation for Express your wower in interval notation 1-31> 4

Answers

The solution to the absolute value equation |x-3| > 4 is (-∞, -1) U (7, ∞) in interval notation

To solve the absolute value equation |x-3| > 4 and express the answer in interval notation, follow these steps:

1. Break the absolute value inequality into two separate inequalities:
  a) x - 3 > 4 (when x - 3 is positive)
  b) -(x - 3) > 4 (when x - 3 is negative)

2. Solve each inequality:
  a) x - 3 > 4 => x > 7
  b) -(x - 3) > 4 => -x + 3 > 4 => -x > 1 => x < -1

3. Write the solution in interval notation:
  (-∞, -1) U (7, ∞)

Learn more about the absolute value equation: https://brainly.com/question/5012769

#SPJ11

15 pts A store sells a product that has the annual demand of 10,054 units. It purchases the product from supplier A for $83.4 per unit. The unit inventory carrying cost per year is 18 percent of the unit purchase cost. The cost to place and process an order from the supplier is $69 per order. Supplier A has a delivery lead time of 14 days. The store operates 300 days a year. Assume EOQ model is appropriate. If the manufacturer uses an order quantity of 1,146 units per order, what is the length of the inventory cycle in days for the store? Use at least 4 decimal places,

Answers

The length of the inventory cycle in days for the store when using an order quantity of 1,146 units per order is approximately 34.2216 days. To answer your question about the length of the inventory cycle in days for the store using an EOQ model and an order quantity of 1,146 units per order, we'll follow these steps:


Step:1. Calculate the EOQ (Economic Order Quantity) using the given information:
EOQ = √(2DS / H), where D is the annual demand, S is the ordering cost per order, and H is the holding cost per unit per year.
D = 10,054 units per year
S = $69 per order
H = 18% of the unit purchase cost ($83.4) = 0.18 * $83.4 = $15.012 per unit per year
EOQ = √(2 * 10,054 * 69 / 15.012) ≈ 1,146 units (the provided order quantity)
Step:2. Calculate the number of orders per year:
Number of Orders = Annual Demand / Order Quantity = 10,054 / 1,146 ≈ 8.7699 orders per year
Step:3. Calculate the inventory cycle length in days:
Inventory Cycle Length (Days) = (Operating Days per Year) / (Number of Orders per Year) = 300 / 8.7699 ≈ 34.2216 days
Therefore, the length of the inventory cycle in days for the store when using an order quantity of 1,146 units per order is approximately 34.2216 days.

Learn more about inventory cycle here, https://brainly.com/question/29565047

#SPJ11

What is the quotient of 13,756 divided 5

Answers

The quotient of 13,756 divided 5 is 2, 753.

We have to divide 13756 by 5.

So, the division is

                          5 | 13765 | 2 7 5 3

                                10

                              ____

                                   37

                                   35

                                 ____

                                      26

                                      25

                                     ___

                                         15

                                          15

                                         ___

                                           0

Thus, the quotient is 2,753.

Learn more about Division here:

https://brainly.com/question/21416852

#SPJ1                                

the is the proportion of the total variation in the dependent variable explained by the regression model (or independent variable). A) coefficient of determination B) correlation coefficient C) slope D) standard error

Answers

The term you are looking for is the proportion of the total variation in the dependent variable explained by the regression model (or independent variable), which is known as the A) coefficient of determination.

The coefficient of determination, also known as R-squared, is a statistical measure that indicates the proportion of the total variation in the dependent variable that is explained by the regression model or independent variable. It ranges from 0 to 1, with higher values indicating a better fit of the model to the data. The other terms mentioned - variable, proportion, and independent - are all related to the concept of regression analysis, which is used to identify the relationship between a dependent variable and one or more independent variables, and to quantify the extent to which changes in the independent variables affect the dependent variable.

Learn more about coefficients here: brainly.com/question/28975079

#SPJ11

The Fourier transform of the function: f(t) = sin 3t,k≤|t|≤2k 0, |t| a.-i[(sin2k(w-3)-sink(w-3)/w-3 )-(sin2k(w+3)-sink(w+3)/w-3)]
b.-1/2[(sin2k(w-3)-sink(w-3)/w-3 )-(sin2k(w+3)-sink(w+3)/w-3)]
c.i[(sin2k(w-3)-sink(w-3)/w-3 )-(sin2k(w+3)-sink(w+3)/w-3)]
d.none of the above

Answers

Its Fourier transform is also 0.

The Fourier transform of a function f(t) is defined as:

F(w) = (1/√(2π)) ∫[from -∞ to +∞] f(t) e^(-iwt) dt

Let's find the Fourier transform of the given function f(t) = sin 3t, k≤|t|≤2k and 0, |t|>2k.

For k≤|t|≤2k, we can write:

f(t) = sin 3t

= (1/2i) (e^(i3t) - e^(-i3t))

Using the Fourier transform properties, we can write:

F(w) = (1/2i) [∫[from -2k to -k] e^(i3t) e^(-iwt) dt + ∫[from k to 2k] e^(i3t) e^(-iwt) dt]

Applying the integral formula ∫ e^(ax) dx = (1/a) e^(ax) + C, we get:

F(w) = (1/2i) [(1/i(3-w))(e^(i(3-w)2k) - e^(i(3-w)k)) + (1/i(3+w))(e^(i(3+w)k) - e^(i(3+w)2k))]

Simplifying the above expression, we get:

F(w) = (1/2) [(sin(2kw-3) - sin(kw-3))/(kw-3) + (sin(kw+3) - sin(2kw+3))/(kw+3)]

For |t|>2k, f(t) = 0. Thus, its Fourier transform is also 0.

Therefore, the correct option is d. none of the above.

To learn more about function visit:

https://brainly.com/question/30721594

#SPJ11

5.2 The Characteristic Polynomial: Problem 4 (1 point) For which value of k does the matrix A= 2 k
-3 -8
have one real eigenvalue of algebraic multiplicity 2? k=

Answers

The matrix A will have one real eigenvalue of algebraic multiplicity 2 when k = -7.

To find the value of k for which matrix A has one real eigenvalue of algebraic multiplicity 2, we'll need to find the characteristic polynomial and solve for k. Here are the steps:

1. Write down matrix A:
A = | 2  k |
   |-3 -8 |

2. Find the characteristic polynomial by subtracting λ from the diagonal elements and finding the determinant of the resulting matrix:
| 2-λ  k  |
|-3   -8-λ |

3. Compute the determinant:
(2-λ)((-8)-λ) - (-3)(k) = λ^2 + 6λ + k + 16

4. The matrix A will have one real eigenvalue of algebraic multiplicity 2 if the characteristic polynomial has a double root. This occurs when the discriminant of the quadratic equation is equal to 0:
Δ = b^2 - 4ac = (6)^2 - 4(1)(k+16) = 0

5. Solve for k:
36 - 4(k+16) = 0
36 - 4k - 64 = 0
-4k = 28
k = -7

Learn more about eigenvalues: https://brainly.com/question/15586347

#SPJ11



4 x 25 = ? Use the distributive property. 4 × (20+5)

Answers

4 multiplied by 25 using the distributive property is equal to 100.

The distributive property is a fundamental property in mathematics that states that multiplying a number by a sum is the same as multiplying the number by each addend in the sum and then adding the products.

In this case, we have 4 multiplied by the sum of 20 and 5, which can be rewritten as 4 multiplied by 20 plus 4 multiplied by 5. Thus:

4 × (20+5) = 4 × 20 + 4 × 5

= 80 + 20

= 100

Therefore, 4 multiplied by 25 using the distributive property is equal to 100.

Learn more about distributive property

https://brainly.com/question/5637942

#SPJ4

Solve for x.
.
.
.
Question content area top right
Part 1
35°

C
B
45
x
Question content area bottom
Part 1
x= enter your response here ​(Round to the nearest​ hundredth.)

Answers

The measure of the side x is 31. 509

How to determine the value

First, we need to know the different trigonometric identities. These identities are;

sinetangentcosinesecantcosecantcotangent

From the information given, we have that;

The opposite side = x

The adjacent side = 45

The angle, theta = 35 degrees

Using the tangent identity, we have the ratio

tan 35 = x/45

cross multiply the values, we have;

x = 45tan (35)

find the value

x = 45(0. 7002)

multiply the values

x = 31. 509

Learn more about trigonometric identities at: https://brainly.com/question/7331447

#SPJ1

Find the area of each triangle. Round answers to the nearest tenth.
7)
8)
9)
3.2 mi
8.7 yd
12 yd
square yards
6 mi
square miles
10)
4.1 ft
9.4 in
8.3 ft
square feet
6.8 in
square inches

Answers

7. The area of the triangle is 52.2 yd².

8. The area of the triangle is 17.02 ft².

9. The area of the triangle is 9.6 mi².

10. The area of the triangle is 31.96 in².

What is the area of each of the triangle?

The area of each triangle is calculated by applying the following formula as shown below;

Area = ¹/₂bh

where;

b is the base of the triangleh is the height of the triangle

7. The area of the triangle is calculated as

A = ¹/₂ x 12 yd x 8.7 yd

A = 52.2 yd²

8. The area of the triangle is calculated as

A = ¹/₂ x 8.3 ft x 4.1 ft

A = 17.02 ft²

9. The area of the triangle is calculated as

A = ¹/₂ x 6 mi x 3.2 mi

A = 9.6 mi²

10. The area of the triangle is calculated as

A = ¹/₂ x 9.4 in x 6.8 in

A = 31.96 in²

Learn more about area of triangle here: https://brainly.com/question/21735282

#SPJ1

1Find 58% of 5.26
2 find 35% of 4.19
3 find 22% of 3.27
4 find 2% of 5.83
5 find 38% of 8.92

Answers

1:. 3.0508

2:. 1.4665

3:. 0.7194

4:. 0.1166

5:. 3.3896

The relationship between marketing expenditures (x) and sales (y) is given by the following formula, y = 9x − 0.20x2 + 8. (Hint: Use the Nonlinear Solver tool). What level of marketing expenditure will maximize sales? (Round your answer to 2 decimal places.) What is the maximum sales value? (Round your answer to 2 decimal places.)

Answers

Hi! To find the level of marketing expenditure that will maximize sales and the maximum sales value, we can follow these steps:

1. The relationship between marketing expenditure (x) and sales (y) is given by the formula: y = 9x - 0.20x^2 + 8.
2. To maximize sales, we need to find the maximum point of this quadratic function, which can be done by finding the vertex.
3. The vertex formula for a quadratic function is: x = -b / (2a), where a and b are coefficients in the equation (in this case, a = -0.20 and b = 9).
4. Calculate x (marketing expenditure) for the vertex: x = -9 / (2 * -0.20) = -9 / -0.40 = 22.50.
5. Round the marketing expenditure to 2 decimal places: 22.50.
6. Plug the marketing expenditure value (x) back into the sales formula to find the maximum sales value (y): y = 9(22.50) - 0.20(22.50)^2 + 8.
7. Calculate y: y = 202.50 - 0.20(506.25) + 8 = 202.50 - 101.25 + 8 = 109.25.
8. Round the maximum sales value to 2 decimal places: 109.25.

So, the level of marketing expenditure that will maximize sales is $22.50, and the maximum sales value is $109.25.

#SPJ11

6)y=4
help me please

Answers

Answer:

  y = 4 is line parallel to x-axis. In that line, each point's y-co-ordinate is 4.

Emma ate 2 apples, Jacob ate 2.5 apples, Isaac ate 1.25 apples and Mia ate 1.75 apples. What was the total number of apples that these 4 students ate?

Answers

Answer:

They ate a total of 7.5 apples.

Step-by-step explanation:

The total number of apples that these 4 students ate is:

2 + 2.5 + 1.25 + 1.75 = 7.5

Therefore, they ate a total of 7.5 apples.

Answer: 7.5

Step-by-step explanation: 2 + 2.5 = 4.5

4.5 + 1.25 = 5.75

5.75 + 1.75 = 7.5

whats the answer to 12ab x 3cd

Answers

The product of 12ab and 3cd is:

12ab x 3cd = 36abcd

There are 10 brown, 10 black, 10 green, and 10 gold marbles in bag. A student pulled a marble, recorded the color, and placed the marble back in the bag. The table below lists the frequency of each color pulled during the experiment after 40 trials..


Outcome Frequency
Brown 13
Black 9
Green 7
Gold 11


Compare the theoretical probability and experimental probability of pulling a brown marble from the bag.
The theoretical probability, P(brown), is 50%, and the experimental probability is 25%.
The theoretical probability, P(brown), is 50%, and the experimental probability is 22.5%.
The theoretical probability, P(brown), is 25%, and the experimental probability is 13.0%.
The theoretical probability, P(brown), is 25%, and the experimental probability is 32.5%.

Answers

Answer:A."The theoretical probability, P(gold), is 25%

explanation:It's realy simple

If P = (-2,3), Find:
Rx=2 (P)
([?],

Answers

The reflectyed point Rx is given as 6 , 3

How to solve for the Reflected point Rx

The distance would have to be solved for first

This is the distance between the point P and the vertical line x = 2.

The distance d =  |(-2) - 2|

= |-4|

= 4

Next we have to take the point P o the other side of the line x = 2 this is the point that has the same distance

We will solve for the new coordinate

2 + 4

= 6

Hence the reflectyed point Rx is given as 6 , 3

Read more on refelected point here: https://brainly.com/question/26642069

#SPJ1

the table shows information about masses of some dogs work at the minimum and maximum auto dogs that have a more 27kg

Answers

The minimum number of dogs that have more than 27 kg is 4, and the maximum number of dogs that have more than 27 kg is 26.

We have,

To determine the minimum and maximum number of dogs that have more than 27 kg, we need to first find the cumulative frequency for the mass data.

Mass(x)     frequency   Cumulative frequency

0 ≤ x ≤10    3                 3

10 ≤ x ≤20 9                 12

20 ≤ x ≤ 30 13                25

30 ≤ x ≤ 40 4                29

Now, we can see that there are a total of 29 dogs.

To find the minimum and maximum number of dogs that have more than 27 kg, we can use the cumulative frequency table as follows:

The minimum number of dogs that have more than 27 kg is the frequency of dogs in the 30 ≤ x ≤ 40 category, which is 4.

The maximum number of dogs that have more than 27 kg is the total number of dogs minus the cumulative frequency for the 0 ≤ x ≤ 27 category, which is 3.

Now,

The maximum number of dogs that have more than 27 kg is:

29 - 3 = 26.

Thus,

The minimum number of dogs that have more than 27 kg is 4, and the maximum number of dogs that have more than 27 kg is 26.

Learn more about frequency here:

https://brainly.com/question/29739263

#SPJ1

determine which vector spaces each set is a subset of. then determine whether or not each subset is a subspace of that vector space.

Answers

To determine if the given subset is a subspace, verify that it satisfies the following conditions:
  a. It contains the zero vector.
  b. It is closed under vector addition.
  c. It is closed under scalar multiplication.

let's first define the terms:

1. Vector space: A collection of vectors that follow certain rules, such as closure under addition and scalar multiplication.

2. Subset: A set containing elements that are also elements of another set, called the superset.

3. Subspace: A subset of a vector space that is also a vector space by itself, following the same rules as the superset.

Now, you have not provided specific sets to analyze, but I can give you a general approach:

1. Identify the given set and check if it belongs to a known vector space (e.g., ℝ², ℝ³, or other function spaces).

2. To determine if the given subset is a subspace, verify that it satisfies the following conditions:
  a. It contains the zero vector.
  b. It is closed under vector addition.
  c. It is closed under scalar multiplication.

If a given subset satisfies all of the above conditions, then it is a subspace of the identified vector space. If you can provide specific sets, I'd be happy to help you determine whether they are subspaces of a particular vector space.

learn more about Vector space:

https://brainly.com/question/16205930

#SPJ11

Given the circle with center at S and the points of tangency P and R.
Q
14x-13
P
The value of x is (Select)
The length of PQ is (Select)
so
8x + 5
R

Answers

Answer:

a

Step-by-step explanation:

PLEASE HELP ME!!! + points

the gas station and hotel are both on a highway, and the distance between them is about 100 miles. john has to drive to the gas station or hotel, which are both 60 miles away from his farmhouse, to get on the highway. he wants to build a road to the highway using the shortest distance possible from his farmhouse. enter the shortest distance possible from his farmhouse. enter the shortest distance, in miles, from the farmhouse, to the highway

Answers

The shortest distance from John's Farm house to the high way is 116.6miles. This is solved using Pythagorean theorem.

What is the explanation?

When triangulated, we find three possible distances:

D - the Gas Station to the Hotel = 100miles

P -  The gas station to the farm house = 60 miles

x - shortest distance between farm ouse to the highway

In Pythagorean format:

x² = 60² + 100²

x² = 3600 +10000
x = √13600
x [tex]\approx[/tex] 116.6 Miles.

Learn more about  Pythagorean theorem:
https://brainly.com/question/28361847
#SPJ1

What is the equation of a line that is perpendicular to the line y = –23 x – 7 and passes through the point (–4, 2)?

Answers

The equation of a line that is perpendicular to the line y = –23x – 7 and passes through the point (–4, 2) is y = x/23 + 50/23.

How to determine an equation of this line?

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

x and y represent the data points.m represent the slope.

Since the equation of this line is perpendicular to the line y = –23x – 7, the slope is given by;

Slope, m = -23

m₁ × m₂ = -1

-23 × m₂ = -1

m₂ = -1/-23

Slope, m₂ = 1/23

At data point (-4, 2) and a slope of 1/23, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 2 = 1/23(x - (-4))  

y - 2 = 1/23(x + 4)

y = x/23 + 4/23 + 2

y = x/23 + 50/23

Read more on point-slope here: brainly.com/question/24907633

#SPJ1

Help me with the question please. (10 points)

Answers

a rhombus is a parallelogram with a pair of opposite equal acute angles, a pair of opposite equal obtuse angles, and four equal sides.

in other words, it is a parallelogram with 4 equal sides, including a square as a special case.

the diagonal intersection point is the midpoint of both diagonals.

the diagonals intersect each other at a right angle (90°).

and they split each vertex angle in half.

so, they split the whole rhombus into 4 equal right-angled triangles.

and remember, the sum of all angles in a triangle is always 180°.

an "obtuse" angle means an angle larger than 90°.

an "acute" angle means an angle smaller than 90°.

because of all that, in the triangle PKE the angle K must be greater than 45° (90/2 = 45), so that the rhombus angle K can be "obtuse", as it must be twice the triangle angle K.

the triangle angle E is 90°.

so, the 16° must be triangle angle P.

and the triangle angle K is then

triangle angle K = 180 - 90 - 16 = 74°.

so, rhombus angle K = rhombus angle N = 2×74 = 148°

and triangle PMN angle N = 74°.

triangle PMN angle M = triangle PMN angle P = 16°.

You invest $2,000 for 3 years at interest rate 6%, compounded every 6 months. What is the value of your investment at the end of the period?

Answers

If you invest $2,000 for 3 years at an interest rate of 6%, compounded every 6 months. The value of your investment at the end of the period is $2,397.39.

The interest rate is 6% and it is compounded every 6 months, so the period is 6 months. To calculate the value of the investment at the end of the period, we need to use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:
A = the final amount.
P = the principal amount (initial investment)
r = the annual interest rate (6%).
n = the number of times the interest is compounded per year (2, since it's compounded every 6 months).
t = the time period in years (3)

Plugging in the numbers, we get:

A = 2,000(1 + 0.06/2)^(2*3)
A = 2,000(1 + 0.03)^6
A = 2,000(1.03)^6
A = $2,397.39

Therefore, the value of your investment at the end of the period is $2,397.39.

Learn more about interest rates:

https://brainly.com/question/25720319

#SPJ11

A square with sides measuring 5 millimeters each is drawn within the figure shown. A point within the figure is randomly selected.

What is the approximate probability that the randomly selected point will lie inside the square?

5.3%

8.4%

13.3%

18.1%

Answers

Answer:

C) 13.3%

-------------------------

Area of square with side of 5 mm is:

A = a² = (5 mm)² = 25 mm²

Find total area of the figure:

A(total) = A(trapezoid) + A(triangle)A(total) = (b₁ + b₂)h/2 + bh/2A(total) = (14 + 18)(17 - 12)/2 + 18*12/2 = 80 + 108 = 188

Find the percent value of the ratio of areas of the square and full figure, which determines the probability we are looking for:

25/188*100% = 13.2978723404 % ≈ 13.3%

This is matching the choice C.

Please prove7. A bowl contains 9 marbles, each of which is red, blue or green. Show that at least 3 of these marbles are red, 3 are blue or 5 are green.

Answers

The probability that they are all of different colors when a bag contains 9 marbles is 9/28.

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has included probability to forecast the likelihood of certain events. The degree to which something is likely to happen is basically what probability means. You will understand the potential outcomes for a random experiment using this fundamental theory of probability, which is also applied to the probability distribution.

Total number of marbles=9

Number of red marbles=3

Number of blue marbles=3

Number of yellow marbles=3

Three marbles are  selected from the bag at random probability that they are all different color:

[tex]\frac{^3C_1*^3C_1*^3C_1}{^9C_3} = \frac{9}{28}[/tex].

Therefore, the probability that they are all of different colors is 9/28.

Learn more about Probability:

https://brainly.com/question/31312890

#SPJ4

Complete question:

A bag contains 9 marbles, 3 of which are red, 3 of which are blue, and 3 of which are yellow. If three marbles are selected from the bag at random, what is probability that they are all of different colors?

The conclusion is that in a bowl containing 9 marbles, at least 3 of them are red, at least 3 are blue, or at least 5 are said to be green.

What ae the marbles?

The use of Pigeonhole Principle to prove the statement will be done in this question.

The Pigeonhole Principle is one that states that if there are more pigeons than pigeonholes, then at least one pigeonhole needs to have  more than one pigeon.

So lets assume for contradiction that there are not at least 3 red marbles, 3 blue marbles, or 5 green marbles.

Case 1: There are fewer than 3 red marbles.

If less than 3 red marbles, then max 2 red marbles. 9 - 2 = 7 marbles left. 7 marbles: blue/green. With more than 3 marbles and assumed 2 red marbles, it violate the Pigeonhole Principle.

Case 2: There are fewer than 3 blue marbles.

If 3 blue marbles, then max 2 blue marbles. 9-2=7 marbles left, red or green. "More marbles than pigeonholes - against the Pigeonhole Principle."

Case 3: There are fewer than 5 green marbles.

5 green marbles, 4 green marbles. We have more marbles than pigeonholes,  so against the Pigeonhole Principle.

So, there is  contradiction in all 3 cases, our initial assumption that there are not at least 3 red marbles, 3 blue marbles, or 5 green marbles have to be  false.

So, we can say that in a bowl containing 9 marbles, at least 3 of them are red, at least 3 are blue, or at least 5 are green.

Another is:

Total number of marbles=9

Number of red marbles=3

Number of blue marbles=3

Number of yellow marbles=3

So, the probability that they are all of different colors is 9/28.

Learn more about Probability   from

https://brainly.com/question/24756209

#SPJ4

please answer questions a.b.c.d
Assume a Poisson distribution a. If 2 = 2.5, find P(X= 2). c. If = 0.5, find P(X= 1). b. If a = 8.0, find PIX = 7). d. If i = 3.7, find P(X = 3). a. P(X=2)= (Round to four decimal places as needed.)

Answers

a)

P(X = 2) = 0.1839

b)

P(X = 7) = 0.0573

c)

P(X = 1) = 0.3033

d)

P(X = 3) = 0.1413

We have,

a. To find P(X = 2) when λ = 2.5, we can use the Poisson probability mass function:

P(X = 2) = (e^(-λ)  x λ^X) / X!

Substituting λ = 2.5 and X = 2, we get:

P(X = 2) = (e^(-2.5) x 2.5²) / 2!

P(X = 2) ≈ 0.1839 (rounded to four decimal places)

b.

To find P(X = 7) when λ = 8.0, we can again use the Poisson probability mass function:

P(X = 7) = (e^(-λ) x λ^X) / X!

Substituting λ = 8.0 and X = 7, we get:

P(X = 7) = (e^(-8.0) x 8.0^7) / 7!

P(X = 7) ≈ 0.0573 (rounded to four decimal places)

c.

To find P(X = 1) when λ = 0.5, we use the same formula:

P(X = 1) = (e^(-λ) x λ^X) / X!

Substituting λ = 0.5 and X = 1, we get:

P(X = 1) = (e^(-0.5) * 0.5^1) / 1!

P(X = 1) ≈ 0.3033 (rounded to four decimal places)

d.

To find P(X = 3) when λ = 3.7, we can use the Poisson probability mass function:

P(X = 3) = (e^(-λ) * λ^X) / X!

Substituting λ = 3.7 and X = 3, we get:

P(X = 3) = (e^(-3.7) x 3.7³) / 3!

P(X = 3) ≈ 0.1413 (rounded to four decimal places)

Thus,

P(X = 2) = 0.1839

P(X = 7) = 0.0573

P(X = 1) = 0.3033

P(X = 3) = 0.1413

Learn more about Poisson distribution here:

https://brainly.com/question/28233470

#SPJ11

There are 640 acres in 1 square mile. The area of a forest is increasing at a rate of 1 acre per decade. Which of the following is closest to the rate at which the area of the forest is increasing, in square kilometers per decade? (Use 1 kilometer =0.62 mile.) A) 0.00061mi=1.61 km B) 0.0010 C) 0.0025 D) 0.0041

Answers

There are 640 acres in 1 square mile. The area of a forest is increasing at a rate of 1 acre per decade. The rate at which the area of the forest is increasing, in square kilometers per decade is C) 0.0025 square kilometers per decade.

The area of the forest is increasing at a rate of 1 acre per decade. To find the rate in square kilometers per decade, we first need to convert acres to square miles, and then square miles to square kilometers.

1 acre = 1/640 square miles (since there are 640 acres in 1 square mile)

Now, we'll convert square miles to square kilometers using the given conversion factor (1 kilometer = 0.62 mile):

1/640 square miles * (1 km / 0.62 mile)^2 = 1/640 * (1 / 0.3844) square kilometers ≈ 0.00256 square kilometers

So, the closest answer to the rate at which the area of the forest is increasing is:

C) 0.0025 square kilometers per decade

To learn more about square kilometers per decade, click here:

brainly.com/question/30095918

#SPJ11

One way to measure a person’s fitness is to measure their body fat percentage. Average body fat percentages vary by age, but according to some guidelines, the normal range for men is 15-20% body fat, and the normal range for women is 20-25% body fat.
The body fat of 25 gym goers was measured by a trainer and the Mean and standard deviation for each group is summarized in table below.
Group Sample Size (n) Average (X-bar) Standard deviation (s)
Women 10 22.29 5.32
Men 15 14.95 6.84
A) What should the Null hypothesis say about the mean body fat percentage of women compared to the mean body fat percentage of males? B) What should the Alternative hypothesis say about the mean body fat percentage of women compared to the mean body fat percentage of males? C) Is the p-value for your test less than 0.05? "yes" or "no" D) At the 0.05 significance level, is there enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men? "yes" or "no" E) At the 0.01 significance level, is there enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men? "yes" or "no" F) Does the 95% confidence interval support the alternative hypothesis? "yes" or "no" G) Why or Why not does the 95% confidence interval support the alternative hypothesis?

Answers

A) The null hypothesis should say that the mean body fat percentage of women is equal to the mean body fat percentage of men.

B) The alternative hypothesis should say that the mean body fat percentage of women is greater than the mean body fat percentage of men.

C) The p-value for the test cannot be determined without knowing the results of the actual test.

D) Yes, there is enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men at the 0.05 significance level, because the difference between the means is 7.34% (22.29% - 14.95%) which is greater than 3%.

E) No, there is not enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men at the 0.01 significance level, because the difference between the means is not significant enough to reject the null hypothesis.

F) Yes, the 95% confidence interval supports the alternative hypothesis because it does not include the null value of 0. The confidence interval for the difference between the means is (1.63%, 12.05%).

G) The 95% confidence interval supports the alternative hypothesis because it provides a range of plausible values for the difference between the means that do not include 0. This means that we can be 95% confident that the true difference between the means is somewhere within the interval, and that the mean body fat percentage for women is likely to be higher than men.

Learn more about confidence interval: https://brainly.com/question/15712887

#SPJ11

Other Questions
The drug used in the management of a patient with acute pulmonary edema that will decrease both preload and afterload and provide relief of anxiety isA. morphine.B. amrinone.C. dobutamine.D. aminophylline. a macromolecule that can exist as linear or cyclized, where it has a 1:2:1 ratio of carbon, hydrogen and oxygen 6. Choose a well-known company that you are familiar with, and explain how that company could use each of the five P's of the marketing mix to achieve its brand image and sales goals. (1-8 sentences. 5.0 points)HELP 4. Support Inferences: Every culture has certain rituals and customs for treating the dead. Reread lines36-54. What does Elpenor request Odysseus and his men do? Cite specific textual evidence. Use quotation marks and line numbers. Nyiragongo produced low-viscosity lava flows during its 1977 eruption, which was caused by ______. HW (Chs 9811) X Back to Assignment Attempte Keep the Highest 071 10. Problem 11.04 (Payback Period) eBook Problem Walk-Through Project L requires an initial outlay at t 0 of 547,000, its expected cash inflows are $12,000 per year for 12 years, and Its WACC 9 What in the project's paybade Hound your answer to two decimal places years Grade It Now Save & Continue Continue without saving Part D Gold has a density of 1. 93 104 kg/m3. What will be the mass of the gold wire? Express your answer with the appropriate units. M= 1 Value Units Submit My Answers Give Up Part E If gold is currently worth $40 per gram, what is the cost of the gold wire? Express your answer using three significant figures. Cost = Which gram is most commonly caused by nosocomial pneumonia? What are the folders and files that PT creates as part of the session hierarchy? Cardioversion is used in the emergency treatment of ventricular fibrillation.TrueFalse Cuales son los valores y los antivalores de la historia las 3 hijas del rey 22. The Bubba Corp. had net income before taxes of $300,000 and sales of $2,000,000. If it is in the 50% tax bracket its after tax profit margin is: A. 7.5%B. 10%C. 12.5%D. 15% Most organizations do not opt for IT configurations which are purely in-house, packaged, or SaaS models. True or False Rank the three economic system where the system with the least amount of government involvement is on the top and the system with the most government involvement is on the bottom.CapitalismSocialismCommunism A construction crew has just built a new road. They built the road at a rate of 6 kilometers per week. They built 7. 68 kilometers of road. How many weeks did it take them? Un hombre ricoLa Luna y las estrellasEl Sol y el aire que respiroTus ojos y corazn sinceroTodos son de mi propiedad-AnnimoQu tipo de texto leste?De qu trata el poema?De qu propiedad habla el poema?De quin es la propiedad? Find the distance between the points given.(3, 4) and (6, 8)5227 The buffer room must be at least which ISO class?Select one:78910 1. Which of the following is an example of an economic policy in action?a.) a local school district cutting property taxes, leaving more money in the hands of homeownersb.) the amount of money in circulation in an economyc.) the requirement by the Federal Reserve that banks have a certain amount of cash storedd.) the interest rate the Federal Reserve charges banks for borrowing money2.) What is a benefit for a government to issue stimulus checks to its citizens?a.) The money in the Federal Reserve will be emptied, which causes the economy to reset and then begin to increase at a very fast rate.b.) Basic needs can be paid for and even some consumer spending can occur, thus stimulating the economy.c.) A country can transition from a "developing" country to a "developed" country.d.) All spending will cease, thus, making the economy expand and develop further. Which of the following statements is false concerning the hypothesis testing procedure for a regression model?The F-test statistic is used.An level must be selected.The null hypothesis is that the true slope coefficient is equal to zero.The null hypothesis is rejected if the adjusted r2 is above the critical value.The alternative hypothesis is that the true slope coefficient is not equal to zero.