Question: a. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 5. b. Repeat part (b) in Exercise 10.45 after

a. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 5.
b. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 20.

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