A mortgage analyst collects data from seven financial institutions on the annual percentage rate (APR) for a 30-year fixed loan The data accompanying this exercise show the results. (You may find it useful to reference the appropriate table: z table or table) Click here for the Excel Data File a. Select the null and alternative hypotheses to determine if the mean mortgage rate exceeds 4.2% 4.2; 4.2 OHot p - 4.2; H? 4.2 b. Calculate the value of the test statistic (Round final answer to 2 decimal places.) Test statistic c. Find the p-value Opvalue