Question: A simple random sample of 80 items resulted in a sample mean of 60. The population standard deviation is = 5. a.Compute the 95% confidence

A simple random sample of 80 items resulted in a sample mean of 60. The population standard deviation is = 5.

a.Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.)

____ to ___

b.Assume that the same sample mean was obtained from a sample of 160 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.)

___ to ____

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