Suppose a university advertises that its average class size is 33 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 classes was selected, and the average class size was found to be 35.9 students. Assume that the standard deviation for class size at the college is 8 students. Using or = 0.10. complete parts a and b below. i W. w... ,_E::)__..__--_AN.. z' .z a. Does the student organization have enough evidence to refute the college's claim? Determine the null and alternative hypotheses. Hozp-D H1411]: The z-test statistic: is D. (Round to two decimal places as needed.) The critical z-score(s) is(are) D. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Because the test statistic the null hypothesis. b. Determine the p-value for this test. The p-value is D (Round to three decimal places as needed.)