15. The finance manager of one of the popular clothing franchise claims that the average balance for her store's charge account customers is N$510. An independent auditor from PWC randomly selected forty-five accounts from her store and found a mean balance of N$511.33 and a standard deviation of N$103.75. If the manager's claim is not supported by these data, the auditor intends to examine all charge account balances. If you were to carry out a procedure to test the manager's claim at a 10% level of significance, what would be your statistical conclusion? [3] O a. Reject the null hypothesis and the alternative hypothesis is probably true. O b. None of these answers is correct. Oc. Accept the null hypothesis and the alternative hypothesis is probably false. O d. Accept the alternative hypothesis because the test statistic is very small