Determine (a) the test statistic, (b) the degrees of freedom, (c) the critical value using a 0.05, and (d) test the hypothesis at the a=0.05 level of significance 1 Ho PA PB PC PD 4 H At least one of the proportions is different from the others Outcome Observed Expected (a) The test statistic is (Type an exact answer) (b) There are degrees of freedom (C) The critical value is (Round to three decimal places as needed) (d) Should the null hypothesis be rejected? OA. Yes because x is less than or equal to x05 OB. No because is greater than x05 OC. Yes because is greater than xos OD. No because x is less than or equal to x0.05 448 A 47 50 6 45 50 B 55 50 880 C DO 53 50