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: freshmen 83 , sophomores 68 , juniors 85 , and seniors 64 . The school superintendent is interested in determine whether there has been a significant change in the classification between last school year and this school year. What is the value of the expected number for freshmen? Select one: a. 83 b. 30 c. 90 d. 10