Question: Refer to Example 9.8. a. Use the method given in Example 9.8 to calculate the power of the test of H 0 : =

Refer to Example 9.8.

a. Use the method given in Example 9.8 to calculate the power of the test of

H0: μ = 880 versus Ha: μ = 880

when n = 30 and the true value of μ is 870 tons.

b. Repeat part a using n = 70 and μ = 870 tons.

c. Use the Power of a z-Test applet to verify your hand-calculated results in parts a and b.

d. What is the effect of increasing the sample size on the power of the test?

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