Hello, I need help with these questions. Can you show all the work and step by step. Thank you.

PSY 2100 Extra Credit Project II PSY 2100 Due by May 16, 2021 1. A hlealth psychologist investigates the number of viral infections people contract as a function of the amount of psychological stress they experience during a one-year period. She wants to see if there are signicant differences (at the si icance level of 0.05 in the mean number of viral infections depending 0n the amount of stress. She obtained the following data (N =20): Negligible Minimal Moderate Severe Stress Stress Stress Stress 2 2 4 7 3 1 5 S 1 3 3 9 1 2 7 6 1 4 6 8 Please answer the following questions: (a) What are the null and alternative hypotheses? (b) What assumptions should be made? Provide 4 assumptions. 1) 2) 3) 4) (c) What are the critical values? (Specify Mass and m rst). In addition, present the decision rules (d) Computation: Show the process of computation as indicated in the lecture note (show the 4 stages as we learned during the class). Then, ll the summary table below: Source SS df MS F Between Within NIA Total (6) What is your decision? Provide your interpretation of the results