deviation of salaries is 15,000. You will have to perform a hypothesis test for the mean. Part A. In the file "Excel A3_2 Part A": 1) State the null and alternative hypotheses 2) Determine the test statistic and calculate its value 3) Obtain the p-value 4) Use the rejection rule for the p-value to determine if you reject HO with a significance level of 5% 5) Write down a short conclusion about the salaries in the company.