Last School Year, in the School of Business Administration, 30 $\alpha$

Essay

Last school year, in the school of Business Administration, 30% were Accounting majors, 24% Management majors, 26% Marketing majors, and 20% Economics majors. A sample of 300 students taken from this year's students of the school showed the following number of students in each major:

We want to see if there has been a significant change in the number of students in each major.
a.Compute the test statistic.
b.Has there been any significant change in the number of students in each major between the last school year and this school year. Use the p-value approach and let $\alpha$ = .05.