We are interested in finding the mean water temperature of a river during the Spring run off from the nearby mountains. You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 54 56.9 51 52.2 53.5 55 51.3 51.9 53 54.9 54.5 54 55.9 54.7 49.6 Use StatKey to get your interval. Find the 80% 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). 80% C.I. =