Two groups of subjects participated in an experiment designed to test the effect of frustration on aggression. The experimental group of 40 subjects received a frustrating puzzle to solve, whereas the control group of 40 subjects received an easy, nonfrustrating version of the same puzzle. Level of aggression was then measured for both groups. Whereas the experimental group (frustration) had a mean aggression score % 1 = 4.0 and a standard deviation of s1 = 2.0, the control group (no frustration) had a mean aggression score % 2 = 3.0 and a standard deviation of s2 = 1.5 (higher mean scores indicate greater aggression). Using these results, test the null hypothesis of no difference with respect to aggression between the frustration and no-frustration conditions. What does the outcome of this test indicate? (Hint: !!#!"= .4) a. What kind of test should be used?____________________ (2pts) b. What is your null hypothesis? _____________________ (3pts) c. What is your research hypothesis?__________________ (3pts) d. What is the formula(s) you need to use? (circle below) (3pts) e. What is the observed value of appropriate test?____________________ (3pts) f. What is the critical value of the appropriate test?___________________ (3pts) g. What is your decision about the hypothesis?_________________________ (3pts)