State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test the following statements:
a. The five numbers 1, 2, 3, 4, and 5 are equally likely to be drawn.
b. The multiple-choice question has a history of students selecting answers in the ratio of 2:3:2:1.
c. The poll will show a distribution of 16%, 38%, 41%, and 5% for the possible ratings of excellent, good, fair, and poor on that issue.