You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. Assume the data is from a normally distributed population. 80% C.I. = 51.1 32.1 75.6 73.2 78.1 35.1 50.4 83 35.1 55.5.