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Average hourly wage for semi-skilled workers

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Reference no: EM131044975

The manager of a firm wants to determine if the average hourly wage for semi-skilled workers is $9 in the Capital District.

In order to do so, she takes a random sample of 100 hourly wages and finds that the sample mean is $8 and the sample standard deviation is $2.

The hypotheses to be tested are:

Ho: u = 9

H1:u does not = 9

Assume that the actual average is $8.9. What is the probability of type II error at the 10% significance level? please show work!

a.

82.993%

b.

94.277%

c.

85.668%

d.

73.477%

e.

92.091%

Reference no: EM131044975

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