Let n, = 50, X, = 10, n2 = 50, and X2 = 30. Complete parts (a) and (b) below. . . . a. At the 0.01 level of significance, is there evidence of a significant difference between the two population proportions? Determine the null and alternative hypotheses. Choose the correct answer below. OB. HO: Ty ST2 OA. HO: Ty = 2 Hy : 1 1 > I 2 OD. HO: Ty # 1 2 OC. HO: Ty 2 12 Hy: my = 1 2 Hy : my