Flsh story: According to a report by the U.S. Fish and Wildlife Service, the mean length of six-yearold rainbow trout in the Arolik River in Alaska is 480 millimeters with a standard deviation of 40 millimeters. Assume these lengths are normally distributed. (a) What proportion of six-year-old rainbow trout are less than 446 millimeters long? Round the answer to four decimal places. The proportion of six-year-old rainbow trout less than 446 millimeters long is 0.1587 . E (b) What proportion of six-yearold rainbow trout are between 405 and 505 millimeters long? Round the answer to four decimal places. The proportion of six-year-old rainbow trout between 405 and 505 millimeters long is E]