Normal population for which the population standard deviatio


A sample of 250 observations is selected from a normal population for which the population standard deviation is known to be 24. The sample mean is 20.

A- Determine the standard error of the mean. (Round your answer to 3 decimal places.)

B- Determine the 99% confidence interval for the population mean. (Round your answers to 3 decimal places.)

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Basic Statistics: Normal population for which the population standard deviatio
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