Question

A population has a mean mu equals 87 and a standard deviation sigma equals 21. Find the mean and standard deviation of a sampling distribution of sample means with sample size n equals 259.

Answer #1

Solution :

Given that ,

mean = = 87

standard deviation = = 21

n = 259

sample distribution of sample mean is ,

_{}
=

_{}
= 87

sampling distribution of standard deviation

_{}
= /
n = 21/
259=1.3049

_{}
= 1.3049

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