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 3 8.44 2.81 1.37 Error 10 20.48 2.05 Total 13 28.92 Reject formula28.mml 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? H0 is not rejected H0 is rejected

Explanation / Answer

from above

as degree of freedom in numerator and denomiantor are 3 and 10 therfore at 0.05 level

critical value F =3.71

hence Reject Ho( null hypothesis) if F>3.71

as test statistic 1.37 is less then critical value ; we can not conclude that  there is a difference in the mean number of months before a raise was granted among the four CPA firms

H0 is not rejected

Source of Variation df SS MS F factor 3 8.44 2.81 1.37 Error 10 20.48 2.05 Total 13 28.92

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