M To evaluate the effectiveness review sessions, a professor gave a pre-test before the review, and a post-test after. The results are shown in the table below. Pre-test (1) Post-test (2) Difference, d=x2-x1 70 92 22 49 16 -33 60 35 -25 79 57 -22 9 37 13 -24 67 63 63 -4 57 56 47 -10 < 60 23 -37 b B 8 > 61 78 17 65 43 -22 58 38 -20 Can we say that the review session significantly harms test performance at 10% significance level? 1. The null and alternative hypotheses would be: Ho Pa Hy: Ha 90 0