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.

Correct answer:

p =  0.108

Step-by-step explanation:

$$\begin{gathered} \mu =484.6\text{mm} \\ \sigma =31.2\text{mm} \\ p=N(x<446mm,\mu ,\sigma ) \\ p=0.108 \end{gathered}$$

Use the normal distribution table.

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