Question: A population has mean 5.75 and standard deviation 1.02. Random samples of size 81 are taken. Find the mean and standard deviation of the sample

A population has mean 5.75 and standard deviation 1.02.

Random samples of size 81 are taken. Find the mean and standard deviation of the sample mean.
How would the answers to part (a) change if the size of the samples were 25 instead of 81?

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