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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 required: a. What are the null and alternate hypotheses? b. What is the test statistic? (round your answer to 2 decimal places. )
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