Question: A sample of size 15 will be drawn from a population with mean 125 and standard deviation 28. a. Is it appropriate to use the

A sample of size 15 will be drawn from a population with mean 125 and standard deviation 28.

a. Is it appropriate to use the normal distribution to find probabilities for x̄?

b. If appropriate find the probability that x̄ will be less than 120.

c. If appropriate find the 90th percentile of x̄.

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