(Answered) The manager of a firm wants to determine if the average

Statistics

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%

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