A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees from each firm: How many months did you work before receiving a raise in salary? Using the following ANOVA table, is there a difference in the mean number of months before receiving a raise among the four firms? Use the 0.05 level of significance.

Analysis of Variance

Source df ss MS F p

Factor 3 32.33 10.78 2.36 0.133

Error 10 45.67 4.57

Total 13. 78.00

a. What are the null & alternate hypothesis?

b. What is a test statistic?

c. What is the p-value?

d. What is your decision regarding the bull hypothesis?

e. Interpret the result