SOLUTION: A teacher finds that the mean score of his class is 72 with a standard deviation of 8. Find the z-score corresponding to 50.
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Question 454418: A teacher finds that the mean score of his class is 72 with a standard deviation of 8. Find the z-score corresponding to 50. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A teacher finds that the mean score of his class is 72 with a standard deviation of 8. Find the z-score corresponding to 50.
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z(50) = (50-72)/8 = -22/8 = -2.75
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That means the data value, 50, is 2 3/4 standard
deviations below the mean of the data.
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Cheers,
Stan H.
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