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Suppose a simple random sample of size n=64 is obtained from a population with =77 and =16. (a) Describe the sampling distribution of x. (b)

Suppose a simple random sample of size

n=64

is obtained from a population with

=77

and

=16.

(a) Describe the sampling distribution of

x.

(b) What is

Px>80.4?

(c) What is

Px72.3?

(d) What is

P75.7

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