You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:

28.6

31.4

28.6

35.5

40.6

29.2

29.6

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. = Answer should be obtained without any preliminary rounding.