Fish story: According to a report by the U.S. Fish and Wildlife Service, the mean length of six-year-old rainbow trout in the Arolik River in Alaska is 478 millimeters with a standard deviation of 38 millimeters. Assume these lengths are normally distributed. (a) What proportion of six-year-old rainbow trout are less than 442 millimeters long? (b) What proportion of six-year-old rainbow trout are between 400 and 500 millimeters long? (c) Is it unusual for a six-year-old rainbow trout to be less than 372 millimeters long? Round the answers to at least four decimal places. Part 1 of 3 The proportion of six-year-old rainbow trout less than 442 millimeters long is X 5 Part 2 of 3 The proportion of six-year-old rainbow trout between 400 and 500 millimeters long is Is x Part: 2 / 3 Part 3 of 3 It is not unusual because the probability of a six-year-old rainbow trout less than 372 millimeters long is X