Suppose you are interested in studying if the amount ofcortisolcirculating in the blood is a good measure of how stressed a person is.Cortisolis a hormone that you believe is released when a person is stressed. You randomly assign 15 students to one of the following 3 groups. The students in group 1 have theircortisollevels measured immediately after returning from vacation (Low Stress). The students in group 2 have theircortisollevels measured after they have been in class for a week (Moderate Stress). Students in group 3 are measured immediately before taking a final exam (High Stress). You record the data shown below.

Vacation Group	Class Group	Final Exam Group
2	10	10
3	8	13
7	7	14
2	5	13
6	10	15

Part A. Write out the null hypothesis and alternative/research hypothesis.

Part B. Calculate thedf_between

Part C. Calculate thedf_within

Part D. Find the critical value for F at alpha = .05.

Part E. CalculateMS_between

Part F. CalculateMS_within

Part G. Calculate your obtained F.

Part H. What is your statistical conclusion?

Part I. What is your substantiative conclusion?

Use the link for the F table if needed : https://docdro.id/8i322b3