The high temperatures (in degrees Fahrenheit) of a random sample of 9 small towns are: 97.8 96.4 97.3 96.8 98.2 97.7 98.6 96.7 99.9 Assume high temperatures are normally distributed. Based on this data, find the 90% confidence interval of the mean high temperature of towns. 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.