In the past, 35% of the students at abc university were in the business college, 35% of the students were in the liberal arts college, and 30% of the students were in the education college. to see whether or not the proportions have changed, a sample of 300 students from the university was taken. ninety of the sample students are in the business college, 120 are in the liberal arts college, and 90 are in the education college. using α = .05, the conclusion of the test is that the a. null hypothesis cannot be rejected. by. marascuilo procedure is more applicable. c. proportions follow normal distribution. d. proportions have not changed significantly.