A sample of 126 corporate managers and another sample of 168 college professors produced mean job-related stress scores of 7.35 for the managers and 6.86 for the professors. Suppose that the standard deviations of the stress scores are 1.12 for the managers and 1.82 for the professors. The null hypothesis is that the mean stress scores are the same for corporate managers and college professors, while the alternative hypothesis is that the mean stress score for managers is different from the mean stress score for professors. Should you reject or fail to reject the null hypothesis in this test?

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A sample of 126 corporate managers and another sample of 168 college professors
produced mean job-related stress scores of 7.35 for the managers and 6.86 for the
professors. Suppose that the standard deviations of the stress scores are 1.12 for the
managers and 1.82 for the professors. The null hypothesis is that the mean stress scores
are the same for corporate managers and college professors, while the alternative
hypothesis is that the mean stress score for managers is different from the mean stress
score for professors. Should you reject or fail to reject the null hypothesis in this test?

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