The data to the right show the average retirement ages for a random sample of workers in Country A and a random sample of workers in Country B. Complete parts a and b, Sample mean Sample size Population standard deviation Country A 64.5 years 40 Country B 66.1 years 40 4.7 years 5.1 years a. Perform a hypothesis test using a 0.10 to determine if the average retirement age in Country B is higher than it is in Country A. Let population 1 be the workers in Country A and population 2 be the workers in Country B. Identify the null and alternative hypotheses. Choose the correct answer below. OA. Ho HH20 OC. Ho H>0 H50 OE. Ho: 144-14230 Calculate the appropriate test statistic OB. Ho20 H <0 OD. Ho H0 H20 OF Ho H0 The test statistic is (Round to two decimal places as needed.) Determine the appropriate critical value(s) The critical value(s) is (are) Statisti mc All Ho There is evidence to conclude that the average retirement age in Country (Round to two decimal places as needed. Use a comma to separate answers as needed.) Since the test statistic B is higher than it is in Country A in the rejection region, b. Determine the p-value and interpret the results D The p-value is (Round to three decimal places as needed.) Since the p-value is Country A Ho. There is evidence to conclude that the average retirement age in Country B is higher than it is in