The Vice Chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her

The Vice Chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited the campus bar on the weekend before the final exam period. Her advisor took a random sample of 250 students and computed the portion of students in the sample who visited the campus bar on the weekend before the final exam. The portion of all students at her university who visited the campus bar on the weekend before the final exam period is an example of