EXAM TYPE PREFERENCE OF UNDER- GRADUATE CHEMICAL ENGINEERING STUDENTS
In the opening sections, we reported the result of an opinion poll of 100 undergraduate chemical engineering students in the United States: 75 of the students prefer "closed-book" exams to "opened-book" ones. At the 5% signi?cance level, test the hypothesis that the true proportion preferring "closed-book" exams is in fact 0.8, against the alternative that it is not.