Question: Assume that a sample is used to estimate a population mean . Find the 99.5% confidence interval for a sample of size 67 with a

Assume that a sample is used to estimate a population mean

Assume that a sample is used to estimate a population mean . Find the 99.5% confidence interval for a sample of size 67 with a mean of 20.9 and a standard deviation of 5.3. Enter your answer as an open- interval (i.e., parentheses) accurate to 3 decimal places. 99.5% C.I. = Answer should be obtained without any preliminary rounding. Question Help: Message instructor

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