justineskantor justineskantor

08-11-2021
Mathematics

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On a recent quiz, the class mean was 74 with a standard deviation of 3.7. Calculate the z-score (to 2 decimal places) for a person who received score of 71.

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jimthompson5910 jimthompson5910

08-11-2021

Answer: -0.81

Work Shown:

z = (x - mu)/sigma

z = (71 - 74)/(3.7)

z = -0.8108 approximately

z = -0.81

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