Reference no: EM132344091

In a recent random sample survey, they asked about the number of hours a week spent on the internet. The survey was stratified by gender into two independent groups of equal size. The following table shows the results. 

Group n Mean Std. deviation 

Males 85 6.8 7.6 

Females 85 4.5 6.2 

A: The researchers conduct a hypothesis test to determine if the mean hours per week for males is different than the mean hours per week for females. 

1) Decide if the necessary assumptions for the test are met for this study, 

2) Give the null and alternative hypotheses for this test. 

B. Which of the following is the p-value for the test of this hypothesis? 

a. .0306 c. .0029 

b. 9.71 x 10-26 d. .0321 

C. State the conclusion the researchers can make about the mean hours per week for males and females, based on the p-value from this hypothesis test. 

D. Which of the following is the 95% confidence interval for the true difference in of hours a week spent on the internet between the two groups? 

a. (4.5, 6.8)

b. (0.8117, 3.7883)

c. (0.1992, 4.4008)

d. (1.9980, 2.6020)