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4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is normally distributed. The data follow:
Males Females
27 25
25 29
19 18
10 23
16 20
22 15

a. What statistical test should be used to analyze these data?
b. Identify H0 and Ha for this study.
c. Conduct the appropriate analysis.
d. Should H0 be rejected? What should the researcher conclude?

e. If significant, compute the effect size and interpret this.
f. If significant, draw a graph representing the data.

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