. A sample of 60 women found that they run an average a of 5km a week with a variance of 64. Another sample of 80 men found that they ran an average of 3km a week with a variance of 81. Test that there is no difference in the distance run by men and women.

. A sample of 60 women found that they run an average a of 5km a week with a variance of 64. Another sample of 80 men found that they ran an average of 3km a week with a variance of 81. Test that there is no difference in the distance run by men and women.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 3CYU

See similar textbooks

Related questions

Q: # 2 1) The data shows a positive correlation Which statement is 100 90 80 2) The data has an…

A: Statement (3) is correct. The dtaat shows a negative correlation.

Q: Calculate the correlation coefficient r. Make a conclusion about the type of correlation.

A: Correlation coefficient measures the strength and direction of the linear relationship between two…

Q: The correlation between a family's weekly income and the amount they spend on restaurant meals is…

A: Here in this scenario r is 0.3 So, it is positive. So, Higher family income is associated with the…

Q: If the coefficient of variation of the data = 40 % , the variance = 100 , then the mean of these…

A: We have given that, Variance (s^2) = 100 Standard deviation (s) = sqrt(variance)…

Q: The variance of the data :. 6 ,6 ,-6,-6 is equal to

A: Find variance of the data 6 ,6 ,-6,-6

Q: A correlation of 0.7 was found between time spent studying and percentage on an exam. What is the…

A: The correlation between time spent studying and percentage on an exam is 0.7. That is, r=0.7. The…

Q: You have a dataset with a mean of 2, median of 3 and variance of 9. What is the skewness?

A: Given that Mean = 2 , Median = 3 , Variance = 9

Q: Find the value of the linear correlation coefficient r. Two different tests are designed to measure…

A: Given data, X Y X*Y X*X Y*Y 23 49 1127 529 2401 25 53 1325 625 2809 28 59 1652 784 3481…

Q: Two variables have the regression lines 3x + 2y = 26 and 6x + y = 31. Find the mean values, the…

Q: If there is a large amount of variation, then on average, the data values will be far from the mean.…

A: The given statement is 'If there is a large amount of variation, then on average, the data values…

Q: Suppose the variance of X is 95. What is the variance of .09X?

A: The objective of this question is to find the variance of a variable that has been scaled by a…

Q: researcher working with socioeconomic data showed a significant positive correlation between the…

A: Given Coefficient of correlation, r=0.19

Q: Refer to the data in images. Test for a significant difference in the variances of the initial…

A: Solution: It is asked to test the claim that is there a significant difference in the variances of…

Q: Which of these statements is best? The variable to be predicted is the independent variable.…

A: Which of these statements is best? The variable to be predicted is the…

Q: 6.34 As in Exercises 6.6, 6.10, and 6.20, in a study of the particulate pollution in air samples…

A: Given that, the joint pdf of X and Y is, f(x,y)= 1 ; 0<=x<=2 ; 0<=y<=1 ; 2y<=x…

Q: A sample correlation r = 0.60 indicates a stronger linear relationship than r = 0.40. True False

A: We are going to explain the about the correlation

Q: The maximum weights (in kilograms) for which one repetition of a half squat can be performed and…

A: Without the data entry of the soccer player with a maximum weight of 180 kg and a jump height of 64…

Q: An investigator collected data on heights and weights of college students. The correlation between…

Q: The systolic blood pressure of individuals is thought to be related to both age and weight. Let the…

A: Given:

Q: The difference between the largest and the smallest data values is the А. variance В. interquartile…

Q: The cost of a week long vacation in a city has a mean of 1000 and a variance of 1200. The city…

A: Solution: Given information: μ= 1000 Population mean σ2= 1200 Population varaince tax = 10%

Q: A researcher finds that the amount of exercise one gets a week and cortisol levels are negatively…

A: Given: It is given that correlation is negative that is r = -0.60

Q: Can you find a set of data such the mean, median, and variance are all equal to each other?

A: A normal distribution is a common probability distribution . It has a shape often referred to as a…

Q: Describe the relationship between x and y in a positive correlation and in a negative correlation.…

A: The positive correlation indicates that if x increases then y will also increase. This shows that x…

Q: A given set of data has a specific variance. Describe what will happen to the variance when all the…

A: Suppose, data is X=(10,15,20,25,30)

Q: The foreman at a large plant estimates that there are defective parts about 1% of the time. If the…

A: It is given that n =20,000 and p = 0.01.

Q: Suppose the correlation between height and weight for adults is +0.80. What proportion (or percent)…

A: From the given information,The correlation between weight and height for adults is 0.80

Q: A negative correlation indicates: the values on the two variables being analyzed move in opposite…

A: We have to find correct answer..

Q: Stock Prices A random sample of stock prices per share (in dollars) is shown. Find the 80%…

A: 7.50,75.37,12.00,28.37,13.88,26.69,14.75,46.12,10.87,40.25,60.50,28.00,28.25,6.94,45.12sample…

Q: 2. State whether the variables described have a positive correlation, a negative correlat…

A: Correlation: If the change in one variable affects a change in the other variable, the variables are…

Q: Here is a scatterplot. Give an estimate for the correlation coefficient r and explain how you made…

A: Correlation: Correlation determines the strength and direction of the linear relationship between…

Q: A study was done that looked at how much red meat people consumed and how long they lived. The…

A: Given information- The value of correlation coefficient, r = 0.98 P-value = 0.0005 Since we know…

Q: The average number of students in the college of business is 56, with a variance of 5. The…

A: GivenMean(x)=56Varaince(σ2)=5standard deviation(σ)=5=2.2361Median was greater than mean by

Q: You are conducting a study to see if students do better when they study all at once or in intervals.…

A: 1. Computing the values of the test statistics: The null and alternative hypotheses are: It is…

Question

Econometrics

1. A sample of 60 women found that they run an average a
of 5km a week with a variance of 64. Another sample of
80 men found that they ran an average of 3km a week
with a variance of 81. Test that there is no difference in
the distance run by men and women.

Expert Solution