Posted by **Jay** on Thursday, December 1, 2011 at 2:47pm.

The weights of trout in a certain river follow a normal distribution with mean 3 pounds and standard deviation 0.8 pounds. What proportion of trout weigh between 3.2 pounds and 4.8 pounds?

a.) .3891

b.) .9972

c.) .9452

d.) .5865

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