Time spent studying. In Exercise 1.173 (page 50) you

Chapter , Problem 15.46

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Time spent studying. In Exercise 1.173 (page 50) you compared the time spent studying by men and women. The students in a large first-year college class were asked how many minutes they studied on a typical weeknight. Here are the responses of random samples of 30 women and 30 men from the class: STIME Women Men 170 120 180 360 240 80 120 30 90 200 120 180 120 240 170 90 45 30 120 75 150 120 180 180 150 150 120 60 240 300 200 150 180 150 180 240 60 120 60 30 120 60 120 180 180 30 230 120 95 150 90 240 180 115 120 0 200 120 120 180 (a) Summarize the data numerically and graphically. (b) Use the Wilcoxon rank sum test to compare the men and women. Write a short summary of your results. (c) Use a two-sample t test to compare the men and women. Write a short summary of your results. (d) Which procedure is more appropriate for these data? Give reasons for your answer.