Question: A population has mean = 47.5 and standard deviation = 12.6. A sample of size 112 is drawn. a. Find the probability that

A population has mean μ = 47.5 and standard deviation σ = 12.6. A sample of size 112 is drawn.

a. Find the probability that x̄ is between 45 and 48.

b. Would it be unusual for x̄ to be greater than 48? Explain.

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