Question

A senior accounting major at Midsouth State University has job offers from four CPA firms. To...

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 29.67 9.89 6.26 0.133

Error 16 25.29 1.58

Total 19 54.96

Homework Answers

Answer #1

From the given Analysis of variance table.

P value is 0.133 > 0.05  

We fail to reject H0.

Therefore, we can say that , the population means are all equal.

F critical value at 0.05 level of significance with numerator df=3 and denominator df=16 is 3.239

Decision rule : Reject H0 if F calculated value > 3.239

F critical value can be calculated by using Excel for F table

=FINV(0.05,3,16)....................................by using Excel command.

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