Homework: Ch 12 HW: HW Score: 12.5%, 2 of 16 E Question 3, 12.1.7 ChiSquare Procedure Part 1 of 4 points O Points: 0 of 1 Save Determine (a) the y" test statistic, (b) the degrees of freedom, (c) the critical value using o = 0.05, and Outcome A B C DO (d) test the hypothesis at the o = 0.05 level of significance. Observed 11 9 10 10 Expected 10 10 10 10 Ho: PA = PB = Pc = PD = 4 Hy: At least one of the proportions is different from the others. (a) The test statistic is (Type an exact answer.)