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  • 15-11-2017
  • 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. How many standard deviations from the mean is that?

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altavistard
altavistard altavistard
  • 15-11-2017
                                                      63 - 38
Just calculate the z-score:    y = ---------------- = 25/10, or   z = 2.5 (answer)
                                                          10
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