Exam Grades A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below). At a = 0.01, can it be concluded that the variance in grades exceeds 100? Assume the variable is normally distributed. 69.5 49.1 72.8 52.8 67.5 96.7 88.5 79.2 72.9 68.7 75.8. 92.3 89.4 76.9 Send data to Excel Part 1 of 5, (a) State the hypotheses and identify the claim with the correct hypothesis. Ho: 0 = 100 not claim H, : 5 > 100 claim This hypothesis test is a one-tailed Y test