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Let ny = 40, X1 = 20, ny = 40, 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. O A. Ho: 11 212 Hp : 31 < 52 O C. Ho: = 2 H: 11 * 172 OB. Ho: 17*12 H:1 = 12 OD. Ho: 1152 H: 12 Calculate the test statistic, ZSTAT, based on the difference P, -P2 The test statistic, ZSTAT, is (Type an integer or a decimal. Round to two decimal places as needed.) Calculate the p-value. The p-value is (Type an integer or a decimal. Round to three decimal places as needed.) Determine a conclusion. Choose the correct answer below. the null hypothesis. There is evidence to support the claim that there is a significant difference between the two population proportions, b. Construct a 99% confidence interval estimate of the difference between the two population proportions. 514-1250 (Type integers or decimals. Round to four decimal places as needed.)