Question: A population has mean ???? = 10 and standard deviation ???? = 8. A sample of size 50 is drawn. a. Find the probability that

A population has mean ???? = 10 and standard deviation ???? = 8.

A sample of size 50 is drawn.

a. Find the probability that x̄ is greater than 11.

b. Would it be unusual for x̄ to be less than 8? Explain.

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