Use the following contingency table to complete (a) and (b) below. A B C Total 15 30 45 90 N 40 50 60 150 Total 55 80 105 240 a. Compute the expected frequencies for each cell. A B C 20.625 30 39.375 N 34.375 50 65.625 (Type integers or decimals. Do not round.) b. Compute XSTAT . Is it significant at a = 0.005? Set up the null and alternative hypotheses to test. Choose the correct answer below. O A. Ho: Not all it; are equal (where j = 1, 2) O B. Ho: Not all it; are equal (where j = A, B, C) O C. Ho: My = 12 O D. HO: TA = ME = NC H. : Not all it, are equal (where j = 1, 2) H. : Not all i; are equal (where j = A, B, C)