How do you do longhand

Constructing Confidence Intervals In Exercises 13-24, assume the sample is from a normally distributed population and construct the indicated confidence intervals for (a) the population variance oz and (b) the population standard deviation o. Interpret the results.22. Maximum Daily Temperature The record high daily temperatures (in degrees Fahrenheit) of a random sample of 64 days of the year in Grand Junction, Colorado, have a sample standard deviation of 16.8 F. Use a 98% level of confidence. (Source: NOAA)