# statistics

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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

• statistics -

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.

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