Question: A population has a mean =81 and a standard deviation =9. Find the mean and standard deviation of a sampling distribution of sample means with

A population has a mean =81 and a standard deviation =9. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=81. Question content area bottom Part 1 x= enter your response here (Simplify your answer.)

The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=75, find the probability of a sample mean being greater than 220 if =219 and =3.7. Question content area bottom Part 1 For a sample of n=75, the probability of a sample mean being greater than 220 if =219 and =3.7 is enter your response here. (Round to four decimal places as needed.)

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