How much do wild mountain lions weigh? The 77th Annual Report of the New Mexico Department of Game and Fish, edited by Bill Montoya, gave the following information. Adult wild mountain lions (18 months or older) captured and released for the first time in the San Andres Mountains gave the following weights (pounds):
681041281226064
(a) Use a calculator with mean and sample standard deviation keys to verify that  = 91.0 pounds and s ≈ 30.7 pounds.
(b) Find a 75% confidence interval for the population average weight μ of all adult mountain lions in the specified region.
(c) What does the confidence interval mean in the context of this problem?