the average starting salary of a student who graduated from college of business in 2019 was $48400. A sample of 100 graduates of 2020 has been presented in excel sheet. assume the statndard deviation of the population is known to be $8000 . we want to determine whether or not there has been a significant increase in the starting salaries

A State the null and alternative hypothesis to be tested

B compute the test statistics

C The null hypothesis is to be tested at the 5% level of significance. Determine the critical value for this test

D Compute the P- value

E Present your conclusion and possible implications.