You intend to estimate a population mean μ with the following sample. 92.3 106.7 81.2 57...

You intend to estimate a population mean μ with the following sample. 92.3 106.7 81.2 57 66.5 77.7 83.1 You believe the population is normally distributed. Find the 99.5% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 99.5% C.I. =

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