State the hypothesis-the test statistic and the conclusion


Twenty-five factory workers were asked how many vacation days they take a year. The average of the sample was 22.85 days, and the standard deviation was 5.80 days. In the past HR uses an average of 25 vacation days per worker in order to make available man-hour and payroll predictions. Is there evidence to show that the number of vacation days decreased over the past year? Use alpha=.05. State the hypothesis, the test statistic, the conclusion.

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Basic Statistics: State the hypothesis-the test statistic and the conclusion
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