American alligators. multi-sensor data loggers were at- tached to free-ranging american alligators in a study conducted by y. watanabe for the article “behavior of american alligators mon- itored by multi-sensor data loggers” (aquatic biology, vol. 18, pp. 1–8). the mean duration for a sample of 68 dives was 338.0 sec- onds. assume the population standard deviation is 100 seconds. a. find a 95% confidence interval for the mean duration, μ, of an american-alligator dive. b. repeat part (a) at a 99% confidence level