Suppose a simple random sample of size nequals36 is obtained from a population with mu equals 72 and sigma equals 12.
(a) Describe the sampling distribution of x overbar.
(b) What is Upper P left parenthesis 69.4 less than x overbar less than 77 right parenthesis?
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Part 1
(a) Choose the correct description of the shape of the sampling distribution of x overbar.
A.
The distribution is approximately normal.
B.
The distribution is uniform.
C.
The distribution is skewed right.
D.
The distribution is skewed left.
E.
The shape of the distribution is unknown.
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