# Fish service

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 = 484.6 millimeters with a standard deviation = 31.2 millimeters. Assume these lengths are normally distributed. What proportion of six-year-old rainbow trout are less than 446 millimeters long? Round your answer up to 4 decimal places.

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