The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. Last year there were 63 inches of snow. How many standard deviations from the mean is that?

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asked Jan 15, 2018 152k views

5 votes

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. Last year there were 63 inches of snow. How many standard deviations from the mean is that?

Mathematics
middle-school

Waqas Ali asked

by Waqas Ali

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1 Answer

5 votes

63 - 38
Just calculate the z-score: y = ---------------- = 25/10, or z = 2.5 (answer)
10

Mark Brittingham answered Jan 19, 2018

by Mark Brittingham

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