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: 0 / 3 Part 1 of 3 The proportion of six-year-old rainbow trout less than 442 millimeters long is X