Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year’s student body showed the following number of students in each classification.
Freshmen83Sophomores68Juniors85Seniors64We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.?Refer to Exhibit 11-2. The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals