A consumer advocacy group is concerned about the variability in the cost of prescription medication. The group surveys eight local pharmacies and obtains the following prices (in $) for a particular brand of medication: (You may find it useful to reference the appropriate table: chi-square table or F table)

34.00

30.50

21.50

28.50

23.00

23.00

22.00

32.50

The group assumes that the above prices represent a random sample drawn from a normally distributed population. Construct the 99% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)