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. Find the number of standard deviations from the mean that is, rounded to two decimal places

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gilliam7479 gilliam7479

03-05-2018
Mathematics

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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. Find the number of standard deviations from the mean that is, rounded to two decimal places

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MsEHolt MsEHolt · Answer 1 · 2018-05-13T04:55:24+02:00

MsEHolt MsEHolt

13-05-2018

This is 2.5 standard deviations from the mean.

We find this by subtracting the mean from our value, and dividing by the standard deviation:
(63-38)/10 = 25/10 = 2.5

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