Question

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 how many months each worked for the firm before receiving a raise in salary. The sample information is submitted to Minitab with the following results:

Analysis of Variance
Source	df	SS	MS	F	P
Factor	3	33.01	11.00	1.60	0.251
Error	10	68.74	6.87
Total	13	101.75

What is the decision rule? (Round your answer to 2 decimal places.)

At the 0.01 level of significance, is there a difference in the mean number of months before a raise was granted among the four CPA firms?

• Do not reject

Answer 1

F critical value is =6.55.......................by using F critical value table or by using Excel command =FINV(0.01,3,10)

Decision rule: Reject H0 if F Calculated value > 6.55

1.60 < 6.55

Therefore, Do not reject H0 at  0.01 level of significance

We do not have sufficient evidence at  0.01 level of significance to say that,  there a difference in the mean number of months before a raise was granted among the four CPA firms