A researcher was interested in undergraduate students' depression level (rated on a scale of 1-10, 1 refers to" no pressure", 10 refers to "extremely under a lot pressure) based upon their ranking (freshman, sophomores, and juniors). The researcher recruited a total of 15 participants: 5 freshmen, 5 sophomores, 5 juniors. Given the significant ANOVA, do a Fisher's Post-Hoc test for this study. Set a = .05. Freshman Sophomores Juniors EX1 = 16 EX2 = 24 EX: = 33 n1 = 5 n2 = 5 n3 = 5 MScover (within) = 2 a) What is the critical value for the above test? (1 point) b) 'Compute all pairwise comparisons. Show your work! (2 points) c) Interpret your findings/results. (1 point)