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 SourcedfSSMSFPFactor328.179.395.370.010Error1526.261.75 Total1854.43a. What is the decision rule?Reject H0 if F> _____________b. 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?

The numerator degrees of freedom is 3. The denominator degrees of freedom is 15.a) The level of significance is 0.05. The F-critical value using F-distribution table or Excel function “=f.inv.rt(0.05,3,15)” is 3.29. The decision rule is reject H0 if F>3.29. b) From the output, the F statistic is 5.37. Here, 5.37>3.29. Thus, reject the null hypothesis. Therefore, there a difference in the mean number of months before a raise was granted among the four CPA firms.

Answered: A senior accounting major at Midsouth…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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	28.17	9.39	5.37	0.010
Error	15	26.26	1.75
Total	18	54.43

a. What is the decision rule?

Reject H0 if F> _____________

b. 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?

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