You wish to test the following claim (Ha) at a significance level of a = 0.001. For the context of this problem, Md 2 pa p1 where the first data set represents a pretest and the second data set represents a post-test. Ho: Md = 0 Ha2 Md # 0 \\. You believe the population of difference scores is normally distributed, but you do not know the standard deviatio_n. You obtain pre-test and post-test samples for n = 120 subjects. The average difference {post - pre) is d = 5.6 with a standard deviation of the differences of 3d = 20.5. ' \\ What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = :t C] What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = [j The test statistic is... D in the critical region Q not in the critical region This test statistic leads to a decision to... D reject the null D accept the null D fail to reject the null As such, the final conclusion is that... C] There is sufficient evidence to warrant rejection of the claim that the mean difference of post-test from pre-test is not equal to 0. C] There is not sufficient evidence to warrant rejection of the claim that the mean difference of post-test from pre-test is not equal to 0. DThe sample data support the claim that the mean difference of post-test from pre-test is not equal to 0. C] There is not sufficient sample evidence to support the claim that the mean difference of post-test from pre-test is not equal to 0. 0 Question 9 B 1 pt '0 1 (9 Details Calculate the test-statistic, t with the following information. 711 = 20, 5:1 = 2.86, 31 S 0.34. n; = 35, 5:2 = 3.25, 32 = 0.36 Rounded to 7. decimal places. :j_____