A researcher wishes to estimate the mean amount of time each week that TUJ students spend with their classmates. She obtains a random sample of 49 TUJ students and nds that the mean weekly time spent with friends is 9.5 hours. Assuming the population standard deviation of the amount of time spent with friends is 6.7 hours, construct a 99% condence interval for the mean time spent with friends each week. USE THE TABLES POSTED IN CANVAS TO SOLVE THIS PROBLEM. Round your answer to TWO DECIMAL PLACES. Example: If the answer is 85.80