A college student is interested in whether there is a difference between male and female students in the amount of time they spend studying each week. The student gathers information from a random sample of male and female students on campus. The amounts of time spent studying are normally distributed. The data are:

Males                                                   Females

27……………………………………………………….25

25……………………………………………………….29

19……………………………………………………….18

10……………………………………………………….23

16……………………………………………………….20

22……………………………………………………….15

14……………………………………………………….19

a. What statistical test should be used to analyze these data?

b. Identify H₀ and H_a for this study.

c. Conduct the appropriate analysis.

d. Should H0 be rejected? What should the researcher conclude?

e. If significant, compute and interpret the effect size.

f. If significant, draw a graph representing the data.

g. Determine the 95% confidence interval.