Posted by **diana** on Wednesday, December 14, 2011 at 6:56am.

Assume the monthly rainfall in a certain state is normally distributed with a mean of 2.85 inches and a standard deviation of .2 inches:

a) probability that in any given month there is between 2.7 and 2.9 inches of rainfall

b) probability that in any given month there is more than 2.9 inches of rainfall

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