Question: Given the summary information in Exercise 12.33, verify the calculation of the 95% confidence interval for each of the treatment means. In exercise 12.33 A

Given the summary information in Exercise 12.33, verify the calculation of the 95% confidence interval for each of the treatment means.
In exercise 12.33
A researcher has used a standard test in measuring the job-satisfaction scores for employees randomly selected from three departments of a large firm. Interpret the results summarized in the following Minitab output.

Analysts of Vartance Source DF Factor Error MS 35.0 14.3 69.9 1311.2 1381.1 2.45 0.092 92 94 Individual 95% CIs for Mean Based on Pooled StDev Level DEPT DEPT2 2515.400 3.841 C DEPT3 Mean 30 17.640 StDev 3.458 C) 40 16.875 3.956 Pooled SeDev3.775 15.0 16.5 18.0

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