A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of foodservice workers in

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A Union Of Restaurant And Foodservice Workers Would Like To Estimate The Mean Hourly Wage U Of Foodservice Workers In 1 (45.09 KiB) Viewed 87 times

A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of foodservice workers in the U.S. this year The mean hourly wage last year was $8.14, and there is good reason to believe that this year's value is less than last year's. The union decides to do a statistical test to see if the value has indeed decreased. The union chooses a random sample of this year's wages, computes the mean of the sample to be $7.87, and computes the standard deviation of the sample to be $1.10. Based on this information, complete the parts below. (a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the test? u x H:0 ロ<ロ OSO ロロ D H: DO D=0 (b) Suppose that the union decides not to reject the null hypothesis. What sort of error might it be making? Choose one) v Х $ ? (C) Suppose the true mean hourly wage for foodservice workers in the U.S. this year is $8.14. Fill in the blanks to describe a Type I error. the hypothesis that u is (Choose one) V (Choose one) A Type I error would be (Choose one) when, in fact, u is (Choose one)