Students entering a certain university have historically selected the following programs

Program % of students

business 10%

education 25%

engineering 30%

liberal arts 25%

science 10%

Data obtained for the most recent class show that 73 students selected business, 105 selected Education, 150 selected engineering, 124 chose liberal arts, and 47 chose science. At the 10% level is there evidence that the historical percentages have changed? Use critical value(s).