Suppose a university advertises that its average class size is 34 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 wasselected, and the average class size was found to be 36.9 students. Assume that the standard deviation for class size at the college is 9 students. Using =0.01, complete parts a and b below.

a. Does the student organization have enough evidence to refute thecollege's claim?

Determine the null and alternative hypotheses.