Question: The following data come from a study designed to investigate drinking problems among college students. In 1983, a group of students were asked whether they had ever driven an automobile while drinking. In 1987 , after the legal drinking age was raised, a different group of college students were asked the same question.

1. Use the appropriate test to evaluate the null hypothesis that the population proportions of students who drove while drinking are the same in the the two calendar years.
2. Construct a \(95 \%\) confidence interval for the true difference in population proportions.
3. What do you conclude about the behavior of college students?

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