You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 60.5
35.8
31.3
35.1
38.4
47.7

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.