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Question

The average hourly wage last year for members of the hospital clerical

staff in a large city was $7.25. The standard deviation of the population was $0.85. This year a sample of 35 workers had an average hourly wage of $7.40. Test the claim that the average has not changed using α = 0.01, which of the following is true?
a.Reject the null hypothesis.
b.There is not enough evidence to support the claim.
c.The test value for this test is z = -6.68.
d.The test value for this test is z = 1.04

Step-by-step answer

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