Question

A population has a mean of 75 and a standard deviation of 27. Find the mean and standard deviation of a sampling distribution of sample means with sample size of 81.

Answer #1

Solution :

Given that,

mean = = 75

standard deviation = = 27

n = 81

The sampling distribution of sample means = = 75

The sampling distribution standard deviation = = / n

= 27 81

= 3

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