For the given data, (a) determine the test statistic H, X y Z (b) determine the critical value at the a = 0.05 level of significance, and 17 18 18 (c) test whether the distributions of the populations are different. 16 16 17 13 15 13 14 10 8 . . . (a) Determine the test statistic H. H = 0.03 (Round to two decimal places as needed.) (b) Determine the critical value at the a = 0.05 level of significance. The critical value is . (Round to four decimal places as needed.)