Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 21 days of operation shows a sample mean of 283 rooms occupied per day and a sample standard deviation of 26 rooms.

1. A.What is the point estimate of the population variance?
2. B.Provide a 90% confidence interval estimate of the population variance (to 1 decimal).(__ ,__ )
3. C.Provide a 90% confidence interval estimate of the population standard deviation (to 1 decimal).(__ ,__ )