Chapter 10.1, Problem 2E

a.

To determine

To find: Whether the provided problem is about comparing proportions or comparing means.

Answer to Problem 2E

It is about comparing proportions.

Explanation of Solution

Given:

Hitting the bottle hard Who is bound to knock back the firewater male or female understudies? The Harvard School of Public Health reviews irregular examples of male and female students at four-year universities and colleges about whether they have occupied with hard-core boozing.

Since, two categories are involved in this problem, that is, Yes or No. It implies that collected data is categorical the mean cannot be computed here. Thus, it could not be concluded that the problem is about proportions.

b.

To determine

To find: The study that is being used here.

Answer to Problem 2E

Observational study.

Explanation of Solution

Since, the observational study does not influence the outcome and in the provided case no outcomes have been influenced here. Therefore, the study is observational.