Determine the mean and standard error


Suppose that the population of heights of male college students is approximately normally distributed with the mean m of 70.07 inches and standard deviation s of 6.48 inches. A random sample of 93 heights is obtained. Show all work.

(A) Determine P(x>70.75)

(B) Determine the mean and standard error of the xbar distribution

(C) Determine P(xbar>70.75)

(D) Why is the formula needed to solve (A) different than (C)?

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Basic Statistics: Determine the mean and standard error
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