Chapter 9, Problem 89CRE

Hours of Television Viewing The number of hours per week of television viewing for random samples of fifth-grade boys and fifth-grade girls were obtained. Each student logged his or her hours for one Monday-through-Friday period. Assume that the students were independent; for example, there were no pairs of siblings who watched the same shows. The data are available at the text’s website.

Using graphical and numerical summaries, write a brief description of how the hours differed for the boys and girls. Then carry out a hypothesis test to determine whether the mean hours of television viewing are different for boys and girls. Evaluate whether the conditions for a $t\text{-test}$ are met, and state any assumptions you must make in order to carry out a $t\text{-test}$.