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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

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

$7.89, and computes the standard deviation of the sample to be $1.15.

Based on this information, complete the parts below.

(a) What are the null hypothesis H0 and the alternative hypothesis H1 that should be used for the test?
H0:
H1:
(b) Suppose that the union decides to reject the null hypothesis. What sort of error might it be making?
(Choose one) Type I or Type II
(c)

Suppose the true mean hourly wage for foodservice workers in the U.S. this year is

$8.16

. Fill in the blanks to describe a Type I error.

A Type I error would be (Choose one)(Rejecting or Failing to reject) the hypothesis that is (Choose one)(less than, less than or equal to, greater than, greater than or equal to, not equal to, or equal to) (Choose one) (1.15, 8.16, or 7.89) when, in fact, is (Choose one). (equal to 1.15, equal to 8.16, less than 1.15, less than 7.89, less than 8.16, or greater than 8.16)

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