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mean hourly wage of foodservice workers in the U S this year The mean hourly...

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mean hourly wage of foodservice workers in the U S this year The mean hourly wage last year was 8 25 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 85 and computes the standard deviation of the sample to be 1 25 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 Ho D H 0 b Suppose that the union decides not to reject the null hypothesis What sort of error might it be making Choose one c Suppose the true mean hourly wage for foodservice workers in the U S this year is 8 25 Fill in the blanks to describe a Type I error A Type I error would be Choose one Choose one Choose one equal to 1 25 equal to 7 85 equal to 8 25 not equal to 8 25 less than 1 25 the hypothesis that u is Choose one when in fact is H 0 0 ORO X X OSO 0 0 O 0

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