Assume that a sample is used to estimate a population mean μ. Find the 99.5% confidence interval for a sample of size 70 with a mean of 63.4 and a standard deviation of 18.2. Enter your answer as an...

Assume that a sample is used to estimate a population mean μ. Find the 99.5% confidence interval for a sample of size 70 with a mean of 63.4 and a standard deviation of 18.2. Enter your answer as an
open-interval
(i.e., parentheses) accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).


99.5% C.I. =



Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.