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Espana A union or restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. this year
Espana A union or restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. this year The mean hourly wage last year was $8.08, and there is good reason to believe that this year's value is different from last year's. The union decides to do a statistical test to see if the value has indeed changed. The union chooses a random sample of this year's wages, computes the mean of the sample to be $7.78, and computes the standard deviation of the sample to be $1.15. Based on this information, complete the parts below. What are the null hypothesis H, and the alternative hypothesis H that should be used X for the test? Am Ho : 0 H :0 020 0-0 0#0 (b) Suppose that the union decides to reject the null hypothesis. What sort of error might it be making? X 5 (Choose one) (c) Suppose the true mean hourly wage for foodservice workers in the U.S. this year is $7.73. Fill in the blanks to describe a Type II error. A Type II error would be (Choose one) the hypothesis that u is (Choose one) (Choose one) . when, in fact, [ is (Choose one)
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