Question: 4. A hotel chain wants to estimate the average number of rooms rented daily in each month. The population of rooms rented daily is assumed to be normally distributed for each with a standard deviation of 24 rooms.

A. During January, a sample of 16 days has a sample mean of 48 rooms. This information is used to calculate an interval estimate for the population mean to be from 38 to 58 rooms. What is the confidence level of this interval?

B . During February, a sample of 55 days has a sample mean of 37 rooms. Use this information to calculate an 82% confidence interval for the population mean.