17. The mean length of a work week for the population of workers was reported to be 39.2 hours. Suppose that we would like to take a current sample of workers to see whether the mean length of a work week has changed from the previously reported 39.2 hours. A. State the hypotheses that will help us determine whether a change occurred in the mean length of a work week.= 4.8 hours. What is the p-value?C. At a = .05 can the null hypothesis be rejected? What is your conclusion? D. Repeat the preceding hypothesis test using the critical value approach.
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