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A simple random sample with n = 55 provided a sample mean of 28.5 and a sample standard deviation of 4.4. (Round your answers to

A simple random sample with n = 55 provided a sample mean of 28.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.)

a.)

Develop a 99% confidence interval for the population mean.

_____________________ to________________________

the answer is not 27 to 30

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