USE THE 7 STEPS IN TESTING THE HYPOTHESIS 1. On the following four groups of teaching attitudes, test the null hypothesis that academic performance does not vary due to teaching attitudes. Superior Above Average Average Below Average 90 85 80 78 89 86 82 76 88 84 83 75 94 83 81 77 93 88 80 75 2. In a learning experiment, 10 Ss are randomly assigned to each of four groups. Each group is asked to perform a set of tasks after exposure to the experimental treatment. Do the groups differ in task performance