A researcher must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:

13.3

28.3

38.9

29.4

42.8

50.2

83.2

53.5

Assuming the population of temperatures are normally distributed, find the 80% confidence interval. Round the answers to two decimal places. Enter your answer as an interval of the form (LB,UP). The researcher is 80% confident that the population average temperature is within the temperature interval