State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees from each firm: How many months did you work before receiving a raise in salary? Using the following ANOVA table, is there a difference in the mean number of months before receiving a raise among the four firms? Use the 0.01 level of significance.   Analysis of Variance Source df SS MS F p Factor 3 25.89 8.63 4.27 0.031 Error 11 22.21 2.02     Total 14 48.10       a. What are the null and alternate hypotheses?   b. What is the test statistic? (Round your answer to 2 decimal places.)   c. What is the p-value? (Round your answer to 3 decimal places.)   d. What is your decision regarding the null hypothesis?   e. Interpret the result.

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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 from each firm: How many months did you work before receiving a raise in salary? Using the following ANOVA table, is there a difference in the mean number of months before receiving a raise among the four firms? Use the 0.01 level of significance.
 

Analysis of Variance
Source df SS MS F p
Factor 3 25.89 8.63 4.27 0.031
Error 11 22.21 2.02    
Total 14 48.10      


a. What are the null and alternate hypotheses?

 



b. What is the test statistic? (Round your answer to 2 decimal places.)

 



c. What is the p-value? (Round your answer to 3 decimal places.)

 



d. What is your decision regarding the null hypothesis?

 



e. Interpret the result.

 
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