Professor takes a random sample of students enrolled in Statistics 101 at ABC University. He finds the following: there are 25 freshman in the sample, 32 sophomores, 18 juniors, and 20 seniors. He wants to know if the distribution of students in his class is equal among the 4 classes.
Formally state the null and alternate hypotheses
Conduct an appropriate statistical test. Use a 0.05 level of significance.
Draw a conclusion based on your statistical test
Considering a proportional distribution, what are the expected numbers of Freshman, sophomores, Juniors, and Seniors in the class?