You intend to estimate a population mean with the following sample.

22.2

22.8

32.7

3.8

12.5

38.2

36.2

21

19

20.2

You believe the population is normally distributed. Find the 99% 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% C.I. = (13.44,28.96)Incorrect Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.