Question

In a study of a large state​ university, students were randomly assigned roommates. researchers found​ that, on​ average, males assigned to roommates who reported drinking alcohol in the year before entering college had gpas​ one-quarter point lower than those assigned to​ non-drinking roommates

Answer 1

true

We find that on average, males assigned to roommates who reported drinking in the year before entering college had one quarter-point lower GPA than those assigned to non-drinking roommates. The 10th percentile of their college GPA is half a point lower than among males assigned roommates who don't drink. For males who drank frequently before college, assignment to a roommate who drank often before college reduces GPA by two-thirds of a point