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Normal probability using z score

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If Z is a standard normal variable, find the probability that Z lies between 0 and 3.01.

The amount of snow fall falling in a certain mountain range is noramlly distributed with a mean of 76 inches, and a standard deviation of 14 inches. What is the probability that the mean annual snowfall during 49 randomply picked years will exceed 78.8 inches?

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This solution gives the step by step method for computing probabilities based on Z score.

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