Question: A simple random sample with n =54 provided a sample mean of 22.5 and a sample standard deviation of 4.4. a. develop a 90% CI

A simple random sample with n =54 provided a sample mean of 22.5 and a sample standard deviation of 4.4.

a. develop a 90% CI for the pop mean

b. develop a 95% CI for the pop mean

c. develop a 99% CI for the pop mean

d. what happens to the margin of error and the CI as the confidence level increases?

Provide excel spreadsheet

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