A senior accounting major at Midsouth State University has job offers from four

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 Factor 4 34.15 8.54 6.16 Error 11 15.24 1.39 Total 15 49.39 Reject H0 if F > . (Round your answer to 2 decimal places.) At the 0.05 level of significance, is there a difference in the mean number of months before a raise was granted among the four CPA firms?

Explanation / Answer

H0: Thee is no significant difference in the mean number of months before a raise was granted.

HA: There is significant difference in the mean number of months before a raise was granted.

ANOVA TABLE

Source       df               SS    MS         F

Factor       4                  34.15       8.54      6.16

Error         11                 15.24        1.39

Total          15                 49.39

Calculated F = 6.16

ndf = 4,11

Level of significance = 0.05

From Table, Critical Value of F = 3.3567

Since the calculated value of F = 8.16 is greater than Table value of F = 3.3567, H0 is rejected.

Conclusion:

There is a difference in the mean number of months before a raise was granted.

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