Answer:x=13
Step-by-step explanation:
2. Amir's community center has an evening art class. He pays $5 every time he goes to the class. His cost, C(a), is given by C(a) = 5a, where a is the number of art classes Amir attends.
a. Identify the independent variable and tell what it represents.
b. Identify the dependent variable and tell what it represents.
Answer: a. The independent variable in the equation C(a) = 5a is a. It represents the number of art classes Amir attends.
b. The dependent variable in the equation C(a) = 5a is C(a). It represents the cost Amir incurs as he attends art classes. The dependent variable is dependent on the independent variable because the cost will change as the number of classes attended changes.
Use the formula for the cardinal number of the union of two sets to solve the problem.
Set A contains 6 elements, set B contains 13 elements, and 4 elements are common to sets A and B. How many elements are in ALB?
a. 14
B. 15
C. 16
D. 19
D. 19 elements are in ALB.
Where do you look for the AUB complement?| A | =6 and | B | = 13,
4 elements are common to sets A and B.
but | A ∪ B | ≠ 6 + 13.
Image search results for Set A has six components, set B has thirteen, and sets A and B share four elements.
ALB contains how many elements?A. 14 B. 15 C. 16 D. 19.The formula for A union B complement is (A U B)’ = A’ B’ or (A U B)c = Ac Bc, where or c represent the complement of a set. As one of De-Laws Morgan’s of Union of Sets, this formula of A union B complement is named after the mathematician De-Morgan. A U B (which denotes the union of two sets A and B) is a set that contains all of the components of A and B.
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The store is selling lemons at $0.52 each. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough lemons to make four 9-inch lemon pies, each requiring half a cup of lemon juice?
The number of employees for a certain company has been decreasing each year by 8%. If the company currently has 630 employees and this rate continues, find the number of employees in 13 years.
So 213 employees left in the company after 13 years.
Given
Number of employee in the company=630
Decreasing rate in the company per year =8%
Time= 13 years
Let the number left in the company be x
Since the decrease rate is 8% we use 0.08
So after 13 years the employee left are
630(1-0.08)¹³=x
630(0.92)¹³=x
630*.338= 212.94
We can take approx as 213
so x= 213
So 213 employees left in the company after 13 years.
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Using Tiles to Multiply Two Binomials
Multiply: (x + 3)(x – 4)
The middle term in the simplified product for (x + 3)(x – 4) will be B. -x.
How to calculate the binomial?A polynomial with only terms is a binomial. For instance, the binomial x + 2 is composed of the terms x and 2.
Binomial is the name for an algebraic expression with only two terms. It is a polynomial with two terms. It is also referred to as the sum or difference of two or more monomials. It is a polynomial's most basic form.
The product of (x + 3)(x – 4) will be:
= x² - 4x + 3x - 12
= x² - x - 12
In this case, the middle term in the simplified product is -x.
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Rotate this image 90° counter-clockwise around the point (1, 1):
The coordinates of the rotated image are:
A' = (1, 1)
B' = (1, 3)
C' = (-2, 1)
Option A is the correct answer.
What is translation?It is the movement of the shape in the left, right, up, and down directions.
The translated shape will have the same shape and shape.
There is a positive value when translated to the right and up.
There is a negative value when translated to the left and down.
We have,
Triangle ABC.
A = (1, 1)
B = (3, 1)
C = (1, 4)
When rotated 90 degrees counterclockwise around (1, 1).
A = (1, 1) will stay the same.
B = (3, 1) will change into B' = (1, 3)
C = (1, 4) will change into C' = (-2, 1)
Now,
The coordinates of the image after reflection are:
A' = (1, 1)
B' = (1, 3)
C' = (-2, 1)
This image is found in option A.
Thus,
The rotated image of the triangle is in option A.
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What is the area of a square with a side length of x - 8?
The area of the square is given by:
A = x^2 - 16x + 64
What is the area of the square?Remember that the area of a square of side length S is given by the formula:
A = S^2
Here we know that the side length is x - 8, then we can just replace that on the formula above to get:
A = (x - 8)^2
Now we can expand that:
A = (x - 8)^2 = (x - 8)*(x - 8)
A = x^2 - 16x + 64
That is the area.
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Rachel's health-related budget is as follows: The percentage budgeted for health Insurance is four times the percentage for health club dues. The percentage budgeted for prescriptions is equal to one-fourth the percentage budgeted for health insurance. The percentage budgeted for doctor visits is twice the percentage budgeted for prescriptions. a. What is the percentage for health insurance? 12.5% b.What are the percentages budgeted for all categories?
The percentages budgeted for all categories is 14.06%
What is the percentage for health insurance?A total of $900 seems to be spent on various health-related expenses:
medication costs, health club dues, and health insurance
seeing a doctor
If we go back in time, we can observe that the rate of doctor visits is double that of prescriptions, which is half that of health insurance,
which is 1/4 times that of health club dues.
As a result, if we consider x to be health club dues, health insurance is included.
4x medical visits, medicines, and health club dues 2x \s
sums to $900 = 8
The amount set up for health insurance is thus $112.5.
112 .5 * 12.5% = 14.06%
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Classify the variables in the data if it’s (qualitative, nominal, ordinal, quantitative, discrete, or continuous etc)
The sample may or may not be representative depending on the sampling method that was used. If the sample was randomly selected from the population, it may be representative.
Classify the variables in the data if it’s?However, if the sample was not randomly chosen, then it may not be representative and may have bias.Gender: Nominal
Age: Ordinal
Number of Family Members: Quantitative, Discrete
Income: Quantitative, Continuous
Education Level: Ordinal
This sample may not be representative of the population as a whole, as it is a small sample size and may not accurately reflect the population.Additionally, the sample is not randomly selected and some groups may be over or underrepresented.Moreover, the sample is not stratified and the data may not be equally distributed across all categories.Therefore, this sample may not be representative and could lead to biased results.To learn more about data classification refer to:
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The value is a statistic because it is a numerical measurement describing some characteristic of a sample.A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 pounds. Determine whether the given value is a statistic or a parameter.
The given value of 157 pounds is a statistic.
This is because it is a numerical measurement describing a characteristic of a sample. A statistic is a value calculated from a sample, whereas a parameter is a value calculated from a population. In this case, the sample is the 40 randomly selected members of the health and fitness club, and the statistic is the average weight of those members. This statistic is used to make inferences about the larger population of all members of the health and fitness club, but it is not the same as the parameter, which would be the true average weight of all members of the club.
Therefore, The given value of 157 pounds is a statistic.
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1) The table below shows a future estimated population and the number of hospitals in
2009 in the United States and the three states - Texas, California, and Florida. Use
the data to answer each question.
Estimated Future Population and Number of Hospitals by State (2009)
Number of
hospitals in
2009
5,008
428
343
210
United States
Texas
California
Florida
Projected
Population
316 million
26.4 million
38.3 million
19.5 million
Patients Admitted in
2009 (in Thousands)
35,527
2,621
3,433
2,453
Assume Florida has the same number of hospitals per million people as Texas.
Estimate the number of hospitals in Florida. Is this estimate close to the actual
number of hospitals in Florida in 2009?
In 2009, Florida would have 558 hospitals if it had the same hospital beds per million residents as Texas. This is a little more than what Florida's real number of hospitals was in 2009. (343).
What is logical proportionality?A mathematical technique called proportional reasoning is used to compare the ratios of two or more identical quantities.
The proportionate reasoning theory is being used in this query.
In this instance, we're contrasting Florida's hospital density per million residents with Texas' hospital density per million residents.
We may predict the number of hospitals in Florida given the same ratio as Texas by comparing these two ratios.
1. Determine Texas's hospital density per million residents: 428 hospitals divided by 26.4 million residents equals 16.2 hospitals per million residents.
2. Determine Florida's hospital density per million residents: 343 hospitals / 19.5 million residents = 17.6 hospitals per million residents.
3. Multiply the population of Florida (19.5 million) by the number of hospitals per million of the population of Texas (16.2) to arrive at 315.3 hospitals: 19.5 million people x 16.2 hospitals per million of the population.
The result should be rounded to the next whole number: 315 hospitals are equal to 315.3 hospitals.
5. Contrast Florida's actual hospital count in 2009 with the expected number of hospitals there (315). (343).
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cara is ordering mushrooms for her restaurant. the graph shows the cost, y, of ordering x pounds of mushrooms what is the equation of the line what is the cost of ordering 6 pounds of mushrooms? iready quiz derive linear equations
Answer: Based on the information provided, it appears that the graph represents a linear equation, which is a straight line. The equation of a straight line can be represented in the form y = mx + b, where m is the slope of the line and b is the y-intercept.
To find the equation of the line, we need two points on the line. We can use the points (x1, y1) and (x2, y2) to calculate the slope of the line, m, using the formula:
m = (y2 - y1) / (x2 - x1)
Without knowing the coordinates of the points on the graph it is not possible to give the equation of the line.
To find the cost of ordering 6 pounds of mushrooms, we would substitute 6 for x in the equation of the line and solve for y.
y = mx + b
y = m(6) + b
Without the equation of the line, it's not possible to find the cost of ordering 6 pounds of mushrooms.
Step-by-step explanation:
T is the incenter of AQRS. Find QT (to the nearest tenth). R U 17 36% 55 W O
The length of Mid segment QT is 57.56 units.
How Do You Find a Triangle's Incenter?The incenter of a triangle can be discovered by drawing the triangle's angle bisectors and then locating the location of their intersection. This is possible with the aid of a compass.
The three line segments and the three lines that include those segments are equally spaced from the incenter and constitute each of the three sides of the triangle.
the single point where the three internal angle bisectors of a triangle meet and which also serves as the circumference of the circle around which it is inscribed.
The three line segments and the three lines that include those segments are equally spaced from the incenter and constitute each of the three sides of the triangle.
ΔQUT is right triangle
QU = 55
UT= 17
Using Pythagoras Theorem
QT² = QU² + UT²
QT² = 55² + 17²
QT = √3314
QT = 57.56
Thus, The length of Mid segment QT is 57.56 units.
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which of the following options correctly describe scientific notation? select all that apply. multiple select question. one digit is present to the right of the decimal point in all cases. the exponent can be a positive or negative integer. the number must be a positive integer. one digit is present to the left of the decimal point in all cases.
"At least one digit is present to the left of the decimal point in all cases" and "the exponent can be a positive or negative integer" are the correct option for the given question.
Decimal numbers, also known as base-10 numbers. They use a system of digits from 0 to 9 and a decimal point to represent values. The decimal point separates the integer part of the number from the fractional part.
For example, in the decimal number 56.36, 56 is the integer part and 36 is the fractional part.
Hence, at least one digit is present to the left of the decimal point in all cases.
In scientific notation, the exponent is used to represent very large or very small numbers. The number is written in the form of a x [tex]10^n[/tex] where 'a' is a decimal number between 1 and 10 (inclusive) and 'n' is an integer (positive or negative) exponent.
Say, for example, 0.00006 can be written as 6 x [tex]10^{-5}[/tex] where 6 is the coefficient and -5 is the exponent.
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Amelia grabbed 50% of the M&M's from a bowl. Then, Jess took 50% of what was left. Dominick takes 50% of the remaining M&M's. There were 3 left. How many M&M's were in the bowl before Amelia arrived.
The number of M&M's that were in the bowl before Amelia arrived is; 12
How to solve Percentage problems?Let the original amount in the bowl be x. Thus;
If Amelia grabbed 50%, then amount left = (100% - 50%)x = 50%x = 0.5x
Now, we are told that domicick took 50% of what was keft after amelia. Thus; New amount left = 100%x - (0.5x + 0.25x) = 0.25x
Now, we are told that there were finally 3 left after all the deductions. Thus;
0.25x = 3
x = 3/0.25
x = 12
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The distributions shown, state the mean and standard deviation for each. Hint: The vertical lines are I standard deviation apart. Part: 0/2 Part 1 of 2 (a) 164.3 173.5 182.7 191.9 2011 210.3 219.5 Mean = Standard deviation
The mean is 120 and the standard deviation is 20.
How to find the mean and standard deviation?
We must calculate the mean and standard deviation from the curve in the preceding graph.
As we can see from the normal distribution curve that the center is at 120.
As a result, 120 is the distribution's mean.
From the above curve:
Mean + Standard deviation = 140
We know that the Mean = 120.
120 + Standard Deviation = 140
Standard Deviation = 20
Therefore, 20 is the standard deviation.
Therefore, from the given data we can find that the Mean is 120 and the Standard deviation is 20.
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she’ll please help the question now pls
The average rate of change of these function f(x), g(x), h(x) on interval [4, 7] from least to greatest is f(x)<g(x)<h(x) with values A1 = -7.5 < A2 = -6 < A3 = -3.
What is a function?
In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.
Average rate of change of any function say S(x) on [a,b] is -
A = [S(b) - S(a)]/b-a....(1)
Now. for function f(x) on interval [4, 7].
Here, use values of f(4) and f(7) from graph and find value of f(x)=y for x=4 and value of f(x)=y for x=7.
f(4) = -10, f(7) = 5
Substitute the values in equation (1) -
A1 = [f(7) - f(4)]/(4 - 7)
A1 = [5 - (-10)]/-2
A1 = 15/-2
A1 = -7.5
Average rate of change for function g(x) on interval [4, 7].
Here, use the values of g(4) and g(7) from table.
g(4) = 7, g(7) = 19
Substitute the values in equation (1) -
A2 = [g(7) - g(4)]/(4 - 7)
A2 = [19 - 7]/-2
A2 = 12/-2
A2 = -6
Average rate of change for function h(x) = x² - 9x + 5 on interval [4, 7].
Here, use the values of h(4) and h(7) by putting x = 4 and x = 7 in function h(x).
h(4) = x² - 9x + 5
h(4) = (4)² - 9(4) + 5
h(4) = 16 - 36 + 5
h(4) = -15
h(7) = x² - 9x + 5
h(7) = (7)² - 9(7) + 5
h(7) = 49 - 63 + 5
h(7) = -9
Substitute the values in equation (1) -
A3 = [h(7) - h(4)]/(4 - 7)
A3 = [-9 - (-15)]/-2
A3 = [-9 + 15]/-2
A3 = 6/-2
A3 = -3
Now, average rate of change of these function f(x), g(x), h(x) from least to greatest is f(x)<g(x)<h(x).
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An insurance company crashed 4 cars in succession at 5 miles per hour . The cost of the repair for each of the four crashes was $427, $451, $412, $212 compute the range ,sample variance and sample standard deviation cost of repair
The range is $______
find (f+g) and (f-g)(x) for f(x)=10x^2+8 and g(x)=2-5x
The requied solution are (f+g)(x) = 10x² + 10 - 5x and (f-g)(x) = 10x² + 6 + 5x.
What is the function?The function is defined as a mathematical expression that defines a relationship between one variable and another variable.
The functions are given in the question, as follows:
f(x) = 10x² + 8 and g(x) = 2 - 5x
To find (f+g)(x) we add f(x) and g(x) term by term.
(f+g)(x) = f(x) + g(x)
Substitute the values of given functions, and we get
(f+g)(x) = 10x² + 8 + (2 - 5x)
(f+g)(x) = 10x² + 10 - 5x
To find (f-g)(x) we subtract g(x) from f(x) term by term.
(f-g)(x) = f(x) + g(x)
(f-g)(x) = 10x² + 8 - (2 - 5x)
(f-g)(x) = 10x² + 6 + 5x
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HELPPP! Find the surface area of the triangular prism
here we are given a triangular prism and we are interested in finding its surface area .
The given prism comprises of 2 triangular faces and 3 rectangular faces . We can separately find the area and then add them up to find the resultant surface area.
Finding area of triangle:-
There are 2 triangles so the total area would be ,
Area = 2(ar. of one ∆)
Area = 2 ( 1/2 * base * height)
Area = 2 ( 1/2 * 16m * 5m )
Area = 80m²
Finding area of rectangle:-
Area = 3 ( length* breadth)
Area= 3 ( 17m * 10m)
Area = 3 * 170m²
Area = 510m²
Total area,
Net Surface area= area of rectangle+ area of triangle= (80+510)m² = 590m² [ required answer]
And we are done!
I need help please!!
Answer:
Step-by-step explanation:
refreh it
PLEASE HELP
Determine whether the statement makes sense or does not make sense, and explain your reasoning.
By writing the imaginary number 14, I can immediately see that 14 is the constant and i is the variable.
VIEW IMAGE
The statement does not makes a sense because i is an imaginary unit and has fixed value √-1.
What is meant by value ?
Market price: The monetary value of anything.A just compensation in the form of products, services, or money for the swapped item.When you appreciate something, you view it as significant and valuable. As an illustration, if you value someone's viewpoint, you might seek their counsel before making a significant choice.Value is concerned with how much something is worth, whether in monetary terms or in terms of significance.The things that someone values are known as their values. In other terms, values are what a person or a group of people see as "important." Examples include valor, integrity, freedom, and creativity, among others.To learn more about value refer to
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For an experiment, Kelly poured equal amounts of distilled water into each of 30 beakers. She used a total of 4.2 liters of distilled water. How many liters did she pour into each beaker?
The required amount of water in each beaker would be 0.14 liters.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Kelly poured equal amounts of distilled water into each of the 30 beakers. She used a total of 4.2 liters of distilled water.
Amount of liters she put in a beaker,
= 4.2 / 30
= 0 .14 liters per beaker
Thus, the required amount of water in each beaker would be 0.14 liters.
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of course, quadratic equations don't always come with the coefficients labeled , , and . for example, assuming the solutions are real and , the larger solution of -bx^2 c^2x a^3
The equation -bx2 + c2x + a3 has a larger solution of x = (-c + sqrt(c2 - 4ab))/2a.
We must first move the constants to the right side of the equation in order to find the solution to the equation
-bx2 + c2x + a3 = 0.
As a result, we have the equation -bx2 + c2x = -a3. The result is x2 - (c2/b)x = -a3/b after dividing both sides by -b. The quadratic formula can be used to resolve this quadratic equation. x = (-c + sqrt(c2 - 4ab))/2a is the equation's more complex solution. We enter the coefficient values into the quadratic formula to verify this. The broader solution is
x = (-4 + sqrt(4 - 24))/4 = (-4 + sqrt(-20))/4 = (-4 + 25)/4 = 0.55 - 1,
for instance, if a = 2, b = 3, and c = 4. This demonstrates that the comprehensive answer.
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what is the answer?????
Answer unzipped,new bases, sealed
Step-by-step explanation:
Pqrs is a rhombus. The length of the shorter diagonal pr is 12cm and the m angle pqr =60.
Find the length of a side of the rhombus
The required length of a side of the rhombus is 10 cm.
What is Rhombus?A parallelogram is a particular instance of a rhombus. The opposing sides and angles in a rhombus are parallel and equal. A rhombus also has equal-length sides on each side, and its diagonals meet at right angles to form its shape. The rhombus is also referred to as a diamond or rhombus.
According to question:Let diagonals intersect each other at o,
In ΔROQ
RQ = [tex]\sqrt{OR^{2}+OQ^{2}}[/tex]
RQ =[tex]\sqrt{36+64} =\sqrt{100}[/tex]
RQ = 10 cm
Thus, required length of the side of rhombus is 10 cm.
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Complete question:
PQRS is a rhombus. The shorter diagonal PR measures 12 units and QS = 16 units. The measure of angle PQR = 60°. Find the length of a side of the rhombus.
find the rang of te function for the given domain
The range of the f(x) is {- 4, 0, 4, 8, 12}
Range of the function:A collection of numbers that represent every possible value of x is said to be the function's domain. The set of numbers that a function can produce is known as its range.
To find the range of a function substitute the domine values into the given function f(x).
Here we have
Give domain of f(x) = 4x + 4; { -2, -1, 0, 1, 2}
The range of the f(x) can be calculated as follows
Take x = -2 => f(x) = 4(-2) + 4 = -8 + 4 = - 4
Take x = -1 => f(x) = 4(-1) + 4 = - 4 + 4 = 0
Take x = 0 => f(x) = 4(0) + 4 = 0 + 4 = 4
Take x = 1 => f(x) = 4(1) + 4 = 4 + 4 = 8
Take x = 2 => f(x) = 4(2) + 4 = 8 + 4 = 12
Therefore,
The range of the f(x) is {- 4, 0, 4, 8, 12}
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Julia had a bag filled with gumballs. There were 1 watermelon, 2 lemon-lime, and 3 grape gumballs. What is the correct sample space for the gumballs in her bag?
Sample space = watermelon, lemon-lime, lemon-lime, grape, grape, grape
Sample space = lemon-lime, watermelon, grape
Sample space = 1, 2, 3, 4, 5, 6
Sample space = 1, 2, 3
For the gumballs in Julia's bag
Sample space = lemon-lime, watermelon, grape.
The correct option is B.
What is sample space?A sample space is a collection or a set of possible outcomes of a random experiment. The sample space is represented using the symbol, “S”. The subset of possible outcomes of an experiment is called events. A sample space may contain a number of outcomes that depends on the experiment.
Given,
Number of lemon limes gumballs in the bag = 2 lemon-lime gumballs
Number of watermelon gumball in the bag = 1 watermelon gumball
Number of grape gumballs in the bag = 3 grape gumball
Sample space is the set of all the possible outcomes the experiment
Here, Julia has 1 watermelon, 2 lemon-lime, and 3 grape gumballs
Sample space = lemon-lime, watermelon, grape
Hence { lemon-lime, watermelon, grape} is the sample space for gumballs in Julia's bag.
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5. The amount of time, t, to finish a race and
the number of laps, I, around a track
For the given condition number of laps "l" is the independent variable.
What are Variables?A symbol (often a letter) is used in mathematics to represent an unknowable numerical value in an equation or algebraic statement. A variable can be defined as a quantity that is changeable and not fixed. Variables are crucial since they make up a significant portion of algebra.
Given The amount of time, t, to finish a race and the number of laps, I,
there are two types of variables,
dependent and independent variables,
In an algebraic equation, an independent variable is one whose values are not impacted by changes. When there are two variables in an algebraic equation, x and y, and each value of x depends on every other value of y, x is an independent variable, and y is a dependent variable.
for the given condition,
the time taken to finish the race directly varies with the number of laps,
so time is dependent on the number of laps and a number of laps "l" is the independent variable.
Hence the independent variable is the number of laps, "l".
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The complete question is,
The amount of time, t, to finish a race and the number of laps, l, around a track. What is the independent variable?
A cause-and-effect relationship between two variables can best be determined from which of the following? When the two variables have a correlation. An observational study where the observational units are chosen randomly. A survey conducted using a simple random sample of individuals. A survey conducted using a stratified random sample of individuals. A controlled experiment where the observational units are assigned randomly to treatments.
The answer is A cause- and- effect relationship between two variables can best be determined When the two variables are identified.
Because the cause and effect relationship is chancing when the variables are identified or there exists a direct relationship between the variable. i.e. when the variables are identified or have a retrogression between the variables.The use of a controlled study is the most effective way of establishing reason between variables. In a controlled study, the sample or population is resolve in two, with both groups being similar in nearly every way.
There are three criteria that must be met to establish a cause- effect relationship. The cause must do before the effect. Whenever the cause occurs, the effect must also do. There mustn't be another factor that can explain the relationship between the cause and effect.
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