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Suppose a simple random sample of size n=36 is obtained from a population with μ= 89...

Suppose a simple random sample of size n=36 is obtained from a population with μ= 89 and σ= 12. Find the mean and standard deviation of the sampling distribution of X.

a) What is P (x > 91.4)?

b) What is P (x ≤ 84.8)?

c) What is P(86< x<93.3)?

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