0/1 pt 9 5 99 @ Details . Question 9 You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 69.7 75.1 72.1 66.8 71.9 62.5 66 72.2 64.3 Find the 90% 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). 90% C.I. = Answer should be obtained without any preliminary rounding