Hi, I need help with this question.

You intend to estimate a population mean pi with the following sample. 81.3 87.8 76.2 96.4 92.7 47.4 66.1 80.2 51.8 91.6 94.2 You believe the population is normally distributed. Find the 99.9% condence interval. Enter your answer as an openinterval (i.e., parentheses) accurate to twp decimal places (because the sample data are reported accurate to one decimal place). 99.9% CI. = (51.55, 95.52) a Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places