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A simple random sample of size n equals 36 is obtained from a population with mu...

A simple random sample of size n equals 36 is obtained from a population with mu equals 72 and sigma equals 12 . ​(a) Describe the sampling distribution of x. ​

B. P (x > 74.9) = ?

C. P (x <= 67) = ?

D. P (71 < x <7.62) = ?

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