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gladu [14]
3 years ago
6

Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5. (a) what are

the mean and standard deviation of the x sampling distribution?
Mathematics
1 answer:
Vika [28.1K]3 years ago
6 0
The sample mean is equal to the population mean.
\bar{X}=\mu=40
The standard deviation of X-bar (the standard error) is:
S.E.=\frac{\sigma}{ \sqrt{n} }=\frac{5}{\sqrt{64}}=0.625
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