Question: Refer to Exercise 8 153 a In the context of the

Refer to Exercise 8.153.
a. In the context of the problem, define a Type II error.
b. Calculate b for the test described in part a of Exercise 8.153, assuming that the true mean is µ = 3.1 ppm.
c. What is the power of the test to detect the effluent's departure from the standard of 3.0 ppm when the mean is 3.1 ppm?
d. Repeat parts b and c, assuming that the true mean is 3.2 ppm. What happens to the power of the test as the plant's mean PCB departs farther from the standard?



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