A researcher must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:
79.5 |
71.1 |
62.2 |
99.7 |
60 |
81.8 |
73.8 |
83.5 |
63 |
Assuming the population of temperatures are normally distributed, find the 90% confidence interval. Round the answers to two decimal places. Enter your answer as an interval of the form (LB,UP).
The researcher is 90% confident that the population average temperature is within the temperature interval .
