The volatility of the stock market, according to the given model, will exceed 40% in 4.19 days.
Using the given model P(X> x) = Cx-a and assuming [a] = 3.3, we can solve for C by using the fact that on 40 days the volatility is larger than 15% in a given year:
P(X > 0.15) = C(0.15)-3.3 = 40/365
C = (40/365)/(0.15)-3.3 = 0.2702
Now we can solve for the probability of the volatility exceeding 40% in a given year:
P(X > 0.4) = 0.2702(0.4)-3.3 = 0.0005
To find the expected number of days with volatility exceeding 40%, we multiply this probability by the number of trading days in a year (assume 252 trading days):
Expected number of days = 0.0005 * 252 = 0.126
Rounding to the nearest whole number, we get:
b. On 4.19 days
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Subtract these mixed numbers.
16 11/12 - 14 2/12
2 3/4
3 2/4
4 1/4
Subtracting the mixed numbers 16 11/12 and 14 2/12 gives the number 2 3/4.
Given two mixed numbers.
16 11/12 and 14 2/12
We have to subtract these numbers.
Subtraction of mixed numbers can be done by first subtracting the whole numbers and then subtracting the fractional part.
16 11/12 - 14 2/12 = (16 - 14) + (11/12 - 2/12)
= 2 + (9/12)
= 2 9/12
= 2 3/4
Hence the difference of the given numbers is 2 3/4.
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Convert 2. 65 × 10^25 atomoms of f into moles of F atoms
The 2.65 × 10²⁵ atoms of Fluorine into moles of F atoms after conversions are 4.406 moles of F atoms.
To convert 2.65 × 10²⁵ atoms of Fluorine into moles of F atoms, we can use Avogadro's number, which is the number of particles (atoms or molecules) in one mole of a substance. Avogadro's number is approximately 6.022 × 10²³ particles per mole.
The conversion factor between atoms and moles is,
1 mole = 6.022 × 10²³ atoms
In order to convert Fluorine atoms to moles, we may do the following steps: multiply the number of atoms by Avogadro's number to obtain the molecular weight,
2.65 × 10²⁵ atoms / 6.022 × 10²³ atoms/mole
= 4.406 moles
Round the answer to an appropriate number of significant figures, if necessary. Therefore, 2.65 × 10²⁵ atoms of Fluorine is equal to 4.406 moles of F atoms.
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Complete question - Convert 2.65 × 10²⁵ atoms of Fluorine into moles of F atoms.
One day, you decide to buy a Mega Millions ticket, and you end up winning $20000. You invest your winnings with PNC Bank in a money market account which earns 6% interest every half-year.
How much money in interest have you earned from your Mega Millions winnings after 7 years of investing in your PNC Bank money market account? [Include a dollar sign in your answer and round to the nearest penny.]
$45218.1
.
The amount of interest earned from the Mega Millions winnings after 7 years of investing in the PNC Bank money market account at 6% interest every half-year is $25,218.08.
How the interest is computed?The interest rate is increased to 12% because 6% every half-year translates to 12% annually.
The compounding period is 14 semi-annual periods because in 7 years there are 14 compounding periods.
N (# of periods) = 14 semi-annual periods (7 years x 2)
I/Y (Interest per year) = 12% (6% x 2)
PV (Present Value) = $20,000
PMT (Periodic Payment) = $0
Results:
Future Value (FV) = $45,218.08
Total Interest = $25,218.08
Thus, from the investment of $20,000 at 6% every half- year, you earn an interest of $25,218.08.
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what is the answer to -z/5-37=-18
Answer:
z = -95
Step-by-step explanation:
You simplify both sides of the equation, then isolate the variable.
A pair of standard since dice are rolled. Find the probability of rolling a sum of 12 with these dice.
P(D1 + D2 = 12) = ------
The probability of rolling a sum of 12 with these dice.
P(D1 + D2 = 12) = 1/36.
When two standard six-sided dice are rolled, there are 36 conceivable results (6 x 6 = 36). To calculate the likelihood of rolling an entirety of 12, we ought to decide how numerous of these 36 conceivable results result in a sum of 12.
As it were a way to induce an entirety of 12 is to roll two sixes, so there's as it were one conceivable result that comes about in a whole of 12. Hence, the likelihood of rolling an entirety of 12 with two dice is 1/36, or roughly 0.0278 (adjusted to the closest thousandth).
This is often because the likelihood of rolling a particular number on one pass-on is 1/6, and since we have two dice, we duplicate 1/6 by 1/6 to induce the likelihood of a particular combination, which is 1/36.
In other words, the likelihood of rolling an entirety of 12 is exceptional moo, which makes it an uncommon event when rolling two dice.
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Use the diagram to match the terms to the correct example!
The various terms of the circle are matched accordingly:
What are the terms?C - Center
CI = Radius
DE - Diameter
HJ - Tangent Line
AB = Chord
GF - Secant
IE - Arc
The region bound by CI, CE, and IE - Sector.
Note that these are all various way in which parts of a circle may be described.
There are also rules and principles guiding the relationship with each of them.
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15p+16 = – 13p–12
I need an answer
Answer:
P=-1
Step-by-step explanation:
a large fish tank at an aquarium needs to be emptied so that it can be cleaned. when its large and small drains are opened together, the tank can be emptied in 4h . by itself, it takes the small drain 6 hr longer to empty the tank than it takes the large drain to empty the tank on its own. how much time would it take for each drain to empty the tank on its own?
The large drain can empty the tank on its own in 10 hours, while the small drain can empty the tank on its own in 16 hours.
Let's assume that the large drain can empty the tank in x hours. Then, according to the problem statement, the small drain can empty the same tank in x + 6 hours.
When both the large and small drains are opened together, they can empty the tank in 4 hours. This means that their combined rate of emptying the tank is 1/4 tank per hour.
We can set up two equations based on the rates of the individual drains and their combined rate:
1/x + 1/(x+6) = 1/4
Solving for x, we get x = 10 hours, which is the time it takes for the large drain to empty the tank on its own.
To find the time it takes for the small drain to empty the tank on its own, we substitute x = 10 in x+6, which gives us 16 hours.
Therefore, the large drain can empty the tank on its own in 10 hours, while the small drain can empty the tank on its own in 16 hours.
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The results from a study using a One-Way ANOVA indicate that there are significant differences between conditions, F(4,55) = 6.17, p<.05, eta² = .19 In Blank 1: How many treatment conditions were compared in this study? In Blank 2: How many individuals participated in the entire study Blank # 1 A Blank #2
Blank 1: In this study, 5 treatment conditions were compared
Blank 2: There were 60 individuals who participated in the entire study
The Independent Samples t Test is extended by the One-way ANOVA (In independent samples t test used to compare the means between two independent groups, whereas in one-way ANOVA, means are compared among three or more independent groups).
Whereas a two-way ANOVA employs two independent variables, a one-way ANOVA just uses one.
Example of One-Way ANOVA You want to examine how three different fertilizer combinations affect crop yield as an agricultural researcher.
ANOVA comes in two primary flavours: one-way (also known as unidirectional) and two-way. ANOVA can also take several forms.
The mean of a quantitative variable is estimated using a two-way ANOVA in relation to the values of two categorical variables
Blank 1: In this study, 5 treatment conditions were compared (the number of conditions is one more than the first number in the F-statistic, which is 4).
Blank 2: There were 60 individuals who participated in the entire study (you can calculate this by adding the two numbers in the F-statistic and then adding 1,
so 4 + 55 + 1 = 60).
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Multiply 6 1/2•1 8/13 simplify the answer and write as mixed number
Let M be a 10 × 10 real matrix such that M^2 = M and the
determinant of the
matrix cannot be 1. Does there exist another 10 × 10 real matrix N
such that MN = NM = In ?
(NM)v_i = N(Mv_i) = Nv_i = v_i.
Thus, MN = NM = I, as required.
Yes, such a matrix N exists.
Since M^2 = M, we can write M(M - I) = 0. Therefore, the only possible eigenvalues of M are 0 and 1.
If M has any eigenvalue equal to 0, then the determinant of M is 0, which is not possible according to the problem statement. Hence, all eigenvalues of M are 1.
Since M is a 10 x 10 matrix, it must have a basis of 10 linearly independent eigenvectors corresponding to the eigenvalue 1. Let v1, v2, ..., v10 be such eigenvectors.
Now, we can define N as follows:
For any i and j, if i = j, then Nv_i = v_i.
For any i and j, if i ≠ j, then Nv_i = v_j.
It is easy to verify that this N satisfies MN = NM = I, the identity matrix.
To see this, note that for any i,
(MN)v_i = M(Nv_i) = Mv_i = v_i
and
(NM)v_i = N(Mv_i) = Nv_i = v_i.
Thus, MN = NM = I, as required.
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The baker made a batch of chocolate chip, oatmeal raisin, and sugar cookies. If P(chocolate chip) = 0.75, interpret the likelihood of randomly selecting a chocolate chip cookie from the batch.
Equally likely and unlikely
Likely
Unlikely
This value is not possible to represent probability of a chance event.
Answer:
likely
Step-by-step explanation:
Probability is a measure of the likelihood of an event occurring. In this case, the event is selecting a chocolate chip cookie from the batch of chocolate chip, oatmeal raisin, and sugar cookies made by the baker.
The probability of selecting a chocolate chip cookie is given as P(chocolate chip) = 0.75.
This means that out of all the cookies in the batch, 75% are chocolate chip cookies.
Since this probability is greater than 0.5 (which represents an event that is equally likely and unlikely), we can interpret it as indicating that it is likely to randomly select a chocolate chip cookie from the batch. In other words, if we were to randomly select a cookie from the batch, it is more likely that we would get a chocolate chip cookie than any other type of cookie.
Therefore, the correct answer is B) Likely.
The likelihood of randomly selecting a chocolate chip cookie is B. Likely.
How to calculate the probability?Probability simply means the chance that a particular thing or event will happen. It is the occurence of likely events. It is simply the area of mathematics that deals with the numerical estimates of the chance that an event will occur or that a particular statement is true.
From the information, the baker made a batch of chocolate chip, oatmeal raisin, and sugar cookies. If P(chocolate chip) = 75%.
The likelihood of randomly selecting a chocolate chip cookie from the batch is 0.75. This implies that it is likely.
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The halsey family recently bought school clothes for their nine children if they spent an average of $167 per child, how much did they spend to the nearest ten dollars
Answer:
$1,500
Step-by-step explanation:
167 x 9 = 1,503 rounded is 1,500 dollars
Hope this helps Good Luck
Which pairs of non-overlapping angles share a ray to make a right angle? Select all that apply.
A ray is a half-infinite line. The pairs of non-overlapping angles that share a ray to make a right angle are ∠FGE and ∠FGH.
Since, We know that;
A half-infinite line (also known as a half-line) with one of the two points and is commonly used to represent a ray. It is assumed to be infinite.
A straight line has an angle of measurement of 180°. And a 90° angle is made when two lines are perpendicular to each other.
As we can see the line EGH is a straight line, and FG is another line that is perpendicular to line EH,
Therefore, it will form two angles measuring 90°. These angles will be ∠FGE and ∠FGH.
Hence, the pairs of non-overlapping angles that share a ray to make a right angle are ∠FGE and ∠FGH.
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recall that we previously showed that the leader produces the monopoly quantity irrespective of the number of follower firms. find an expression for the equilibrium quantity of a follower firm
The equilibrium quantity of a follower firm in a market with a leading firm that produces the monopoly quantity is determined by the follower's reaction function. Specifically, the follower will choose a quantity that maximizes its profit given the quantity chosen by the leader.
Assuming that the follower's cost function is linear, the equilibrium quantity can be expressed as a function of the leader's quantity. Let Qf denote the quantity chosen by the follower and Ql denotes the quantity chosen by the leader. The follower's profit function can be written as:
πf = (P(Qf) - c)Qf
where P(Q) is the market price as a function of the total quantity produced (Q = Qf + Ql) and c is the follower's unit cost. The first-order condition for profit maximization is:
∂πf / ∂Qf = P(Qf) + Qf ∂P / ∂Q - c = 0
Solving for Qf, we get:
Qf = (1 / 2) (Qm - Ql)
where Qm is the monopoly quantity produced by the leader. This expression shows that the follower's equilibrium quantity is half of the deviation between the monopoly quantity and the quantity chosen by the leader. In other words, the follower's quantity is determined by the leader's deviation from the monopoly quantity.
Overall, the expression for the equilibrium quantity of a follower firm in a market with a leader that produces the monopoly quantity is Qf = (1 / 2) (Qm - Ql), where Qm is the monopoly quantity and Ql is the quantity chosen by the leader. This result highlights the strategic interdependence between the leader and the follower and the importance of anticipating each other's actions in a competitive market.
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2. Which kind of function best models the set of data points (-3, 18), (-2, 6), (-1, 2), (0, 11), and (1,27)? Olinear O quadratic O exponential Onone of the above?
Exponential kind of function best models the set of data points (-3, 18), (-2, 6), (-1, 2), (0, 11), and (1,27).
To figure out which sort of capability best models the given arrangement of pieces of information, we can plot them on a chart and outwardly review the state of the bend that interfaces them.
After plotting the given pieces of information, we can see that the bend that best fits them is certainly not a straight line (direct) or a parabola (quadratic), as it seems to bend all the more steeply. The bend that best fits these focuses is likewise not a steady capability (nothing unless there are other options), as the upsides of y change concerning x.
Consequently, the capability that best models the given arrangement of information focuses is a dramatic capability, which has a bend that increments or diminishes at a speeding up rate. An overall condition for a dramatic capability is:
y =[tex]ab^x[/tex]
where an and b are constants. We can utilize the given focuses to track down the upsides of an and b, and in this manner get the particular condition that models the data of interest.
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Which graph represents the solution set of the inequality x + 2 greater-than-or-equal-to 6 A number line goes from negative 9 to positive 9. A solid circle appears on positive 3. The number line is shaded from positive 3 through negative 9. A number line goes from negative 9 to positive 9. An open circle appears at positive 3. The number line is shaded from positive 3 through positive 9. A number line goes from negative 9 to positive 9. A closed circle appears at positive 4. The number line is shaded from positive 4 through positive 9. A number line goes from negative 9 to positive 9. An open circle appears at positive 4. The number line is shaded from positive 4 through negative 9.
The graph of the inequality is x + 2 ≥ 6 is plotted
Given data ,
Let the inequality equation be represented as A
Now , the value of A is
x + 2 ≥ 6
Subtracting 2 on both sides , we get
x ≥ 4
So , the inequality is x ≥ 4 and the graph is plotted
Hence , the inequality is x ≥ 4
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diameter of a circles radius dilated by a factor of 4
Answer:
8
Step-by-step explanation:
diameter=radius×2=4×2=8
Write an expression that represents the area of the following figures.
16w length
5z height
Answer:
Step-by-step explanation:
Prove that x²J"n(x)=(n²-n-x²)Jn(x)+xJn+1(x),whare n=0,1,2,3...
We can use the recurrence relation for Bessel functions on the terms involving J_(n+2)(x):
x^2J"n(x) = (n^2 - n)J_n(x) - xJ_(n+1)(x) + (n+2)x^2J_n(x) + 2nxJ_(n+2)(x) + (d/dx)^(n-2) [xJ_n(x) +
To prove the given identity, we will start with the following expression:
x^2J_(n+1)(x) = xJ_n(x) + xJ_(n+2)(x) (Recurrence relation for Bessel functions)
Now, let's differentiate both sides of the above equation n times with respect to x:
(d/dx)^n [x^2J_(n+1)(x)] = (d/dx)^n [xJ_n(x)] + (d/dx)^n [xJ_(n+2)(x)]
Using the Leibniz rule for differentiating products, we can expand each term on the right-hand side:
(d/dx)^n [x^2J_(n+1)(x)] = x(d/dx)^n [J_n(x)] + n(d/dx)^(n-1) [J_n(x)] + (d/dx)^(n-2) [J_n(x)] + x(d/dx)^n [J_(n+2)(x)] + 2n(d/dx)^(n-1) [J_(n+2)(x)] + (d/dx)^(n-2) [J_(n+2)(x)]
Now, we can use the recurrence relation for Bessel functions on the terms involving J_n(x) and J_(n+2)(x):
(d/dx)^n [x^2J_(n+1)(x)] = xJ_(n-1)(x) + nJ_(n-1)(x) + (d/dx)^(n-2) [J_n(x)] + xJ_(n+3)(x) + 2nJ_(n+3)(x) + (d/dx)^(n-2) [J_(n+2)(x)]
We can simplify the above expression using the following identity:
(d/dx)^n [xJ_n(x)] = xJ_(n-n)(x) + nJ_(n-1)(x)
Substituting this identity into the above equation, we get:
(d/dx)^n [x^2J_(n+1)(x)] = xJ_n(x) + nJ_n(x) - nJ_(n-1)(x) + xJ_(n+2)(x) + 2nJ_(n+2)(x) + (d/dx)^(n-2) [J_n(x) + J_(n+2)(x)]
Next, we can multiply both sides of this equation by x^2 and simplify using the identity:
(n+1)J_n(x) = xJ_(n+1)(x) + xJ_(n-1)(x)
Multiplying both sides by x and substituting the resulting expression into the previous equation, we obtain:
x^2J"n(x) = (n^2 - n)J_n(x) - xJ_(n+1)(x) + x^2J_(n+2)(x) + 2nxJ_(n+2)(x) + (d/dx)^(n-2) [xJ_n(x) + xJ_(n+2)(x)]
Now, we can use the recurrence relation for Bessel functions on the terms involving J_(n+2)(x):
x^2J"n(x) = (n^2 - n)J_n(x) - xJ_(n+1)(x) + (n+2)x^2J_n(x) + 2nxJ_(n+2)(x) + (d/dx)^(n-2) [xJ_n(x) +
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the world series in baseball continues until either the american league team or the national league team wins four games. how many different orders are possible (e.g., annaaa means the american league team wins in 6 games) if the series goes four games?
There are 7 different orders possible if the series goes four games.
How to find orders if the series goes four games?If the series goes exactly four games, then one team must win at least three of those games in order to win the series.
Without loss of generality, let's assume that the American League (AL) team wins the series in four games.
There are several possible ways that this could happen:
AL team wins the first 4 games (AAAA)AL team wins the first 3 games, then the National League (NL) team wins the fourth game (AAAN)AL team wins the first 2 games, then NL team wins the third game, and AL team wins the fourth game (AANAA)AL team wins the first 2 games, then NL team wins the third and fourth games (AANNN)AL team wins the first game, then NL team wins the second game, and AL team wins the third and fourth games (ANAAA)AL team wins the first game, then NL team wins the second and third games, and AL team wins the fourth game (ANANAA)AL team wins the first game, then NL team wins the second, third, and fourth games (ANANNN)Therefore, there are 7 different orders possible if the series goes four games.
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Use the diagram to answer the question.
The measure of ∠1
∠
1
is 62°
62
°
. What is the approximate value of n
n
?
Applying the definition of a linear pair, the value of n is calculated as: n = 41.33.
What is a Linear pair?A linear pair consist of two angles that are on a straight line and also have a sum of 180 degrees.
The missing diagram is in the attachment provided below which shows the angles in question.
Angle 1 and (3n - 6) are two angles on a straight line, therefore, they are a linear pair. This also implies that they will have a sum of 180 degrees.
Therefore, we have:
62 + 3n - 6 = 180
Solve for the value of n:
56 + 3n = 180
3n = 180 - 56
3n = 124
n = 124/3
n = 41.33
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you have determined that you need a showing rate of 79.62 kg/ha
for a wheat crop. if you have 12.560 kg of wheat seed,what
percentage of 250 ha paddock could you sow?
To calculate the percentage of the 250 ha paddock that can be sowed with 12.560 kg of wheat seed, we first need to determine how much seed is needed per hectare and this will give the answer 0.063%.
Given that the showing rate is 79.62 kg/ha, we can divide the total seed amount by the showing rate to get the number of hectares that can be sown with the given amount of seed:
12.560 kg / 79.62 kg/ha = 0.1576 ha
This means that 0.1576 hectares of land can be sown with 12.560 kg of wheat seed.
To calculate the percentage of the 250 ha paddock that can be sown, we can divide the sown land area by the total paddock area and then multiply by 100:
0.1576 ha / 250 ha x 100% = 0.063%
Therefore, you can sow approximately 0.063% of the 250 ha paddock with 12.560 kg of wheat seed, assuming a showing rate of 79.62 kg/ha.
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What is an equation of a line, in point-slope form, that passes through (1, -7) and has a slope of -2/3?
o y + 7 = -2/3 (x − 1)
o y − 7 = -2/3 (x + 1)
o y − 7 = -2/3 (x − 1)
o y + 7 = -2/3 (x + 1)
The equation of the line, in point-slope form, that passes through (1, -7) and has a slope of -2/3 is y + 7 = -2/3 (x − 1).
Option A is the correct answer.
We have,
The point-slope form of a linear equation is:
y - y1 = m(x - x1)
where (x1, y1) is a point on the line and m is the slope of the line.
Now,
Given that the line passes through the point (1, -7) and has a slope of -2/3, we can substitute these values into the point-slope form:
y - (-7) = (-2/3)(x - 1)
Simplifying the equation:
y + 7 = (-2/3)x + (2/3)
Subtracting 7 from both sides:
y = (-2/3)x - (19/3)
So,
y + 7 = -2/3 (x - 1)
Thus,
The equation of the line, in point-slope form, that passes through (1, -7) and has a slope of -2/3 is y + 7 = -2/3 (x − 1).
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A propane gas tank consists of a cylinder with a hemisphere at each end. Find the volume of the tank if the overall length is 15 feet and the diameter of the cylinder is 6 feet, as shown in the figure. (Round your answer to two decimal places.)
The volume of the tank that is shown here is 282.31
How to solve for the volumeIn mathematics, the capacity of a 3D object is denoted by its volume. Volume is typically computed in cubic units like cubic meters (m³), cubic centimeters (cm³), cubic feet (ft³) or cubic inches (in³). Depending on an object's form, various formulas can be used to calculate its volume.
15 - 6 = 9
Radius = 6 / 2
= 3
Then the volume =
4 / 3 π (3)³ + π (3)²6
= 112.75 + 169.56
= 282.31
The volume is 282.31
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What is the median of the data set?
Responses
A. 10
B. 8.5
C. 8
D. 9
The median of the data-set 3, 3, 5, 7, 9, 9, 10, 10 is given as follows:
C. 8.
How to obtain the median of a data-set?The median of a data-set is the middle value of a data-set, the value of which 50% of the measures are less than and 50% of the measures are greater than. Hence, the median also represents the 50th percentile of a data-set.
The data-set for this problem is given as follows:
3, 3, 5, 7, 9, 9, 10, 10.
The data-set has an even cardinality, hence the median is given by the mean of the two middle elements, as follows:
Median = (7 + 9)/2
Median = 8.
Missing InformationThe data-set for this problem is given as follows:
3, 3, 5, 7, 9, 9, 10, 10.
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A half-century ago, the mean height of women in a particular country in their 20s was 62.8 inches. Assume that the heights of today's women in their 20s are approximately normally distributed with a standard deviation of 1.65 inches. If the mean height today is the same as that of a half-century ago, what percentage of all samples of 26 of today's women in their 20s have mean heights of at least 63.36 inches?
About% of all samples have mean heights of at least 63.36 inches. (Round to one decimal place as needed.)
About 4.24% of all samples of 26 of today's women in their 20s have mean heights of at least 63.36 inches.
Since the sample size is 26, we can use the central limit theorem and assume that the distribution of sample means is approximately normal with a mean of 62.8 inches and a standard deviation of 1.65 inches / sqrt(26) = 0.323 inches.
To find the percentage of samples with mean heights of at least 63.36 inches, we need to find the z-score corresponding to this value:
z = (63.36 - 62.8) / 0.323 = 1.74
Using a standard normal distribution table or calculator, we can find that the percentage of samples with z-scores greater than or equal to 1.74 is about 4.24%. Therefore, about 4.24% of all samples of 26 of today's women in their 20s have mean heights of at least 63.36 inches.
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How do you solve this?
Answer:
23 ft^3
Step-by-step explanation:
The volume would be the little box plus the big rectangle. The volume of the little box is 2*2*2 which equals 8. The volume of the second box is 1*3*5 which equals 15. The volume of the whole shape is 8+15=23ft^3.
PLEASE HELP ITS URGENT I INCLUDED THE PROBLEM IN IMAGE I WROTE IT DOWN!!!
Answer:
Step-by-step explanation:
It's D.
please help with my homework problem!
The values of the variables for the parallelogram include the following;
x = 3.y = 33.z = 2.5What is a parallelogram?In Mathematics and Geometry, a parallelogram is a geometrical figure (shape) and it can be defined as a type of quadrilateral and two-dimensional geometrical figure that has two (2) equal and parallel opposite sides.
In this context, we can reasonably infer and logically deduce that this parallelogram has both pairs of opposite sides parallel to each other and the opposite angles (vertical angles) are equal and congruent.
By CPCTC, the variable x can be calculated as follows;
15x = 45°
x = 45°/15
x = 3
Since the diagonals of a parallelogram are perpendicular to each other, we have:
m<1 = 3y - 9 = 90
3y = 99
y = 33
15x = 18z
15(3) = 18z
45 = 18z
z = 45/18
z = 2.5
Read more on a parallelogram here: https://brainly.com/question/31416609
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Missing information:
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