According to the national lnstitute on alcohol abuse and alcoholism, 41% of college students nationwide engage in "binge drinking" behavior, having 5 or more drinks in one occasion during the past two weeks. a college president wonders if the proportion of students enrolled at her college that binge drink is actually lower than the national proportion. ln a commissioned study, 348 students are selected randomly from a list of all students enrolled at the college. of these, 132 admitted to having engaged in binge drinking. a. what is the population being studied, and what is the sample and sample size?