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 Aroli River in Alaska is 485 millimeters with a standard deviation of 45 millimeters. Assume these lengths are normally distributed. (a) What proportion of six-year-old rainbow trout are less than 456 millimeters long? (b) What proportion of six-year-old rainbow trout are between 386 and 486 millimeters long? (c) Is it unusual for a six-year-old rainbow trout to be less than 388 millimeters long? Round the answers to at least four decimal places. Part: 0/3 Part 1 of 3

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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 485 millimeters with a standard deviation of 45 millimeters. Assume these lengths'are normally distributed.
(a) What proportion of six-year-old rainbow trout are less than 456 millimeters long?
(b) What proportion of six-year-old rainbow trout are between 386 and 486 millimeters long?
(c) Is it unusual for a six-year-old rainbow trout to be less than 388 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 456 millimeters long is
Transcribed Image Text: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 485 millimeters with a standard deviation of 45 millimeters. Assume these lengths'are normally distributed. (a) What proportion of six-year-old rainbow trout are less than 456 millimeters long? (b) What proportion of six-year-old rainbow trout are between 386 and 486 millimeters long? (c) Is it unusual for a six-year-old rainbow trout to be less than 388 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 456 millimeters long is
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