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14-07-2019
Mathematics

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scores on a test have a mean of 67 and a standard devation of 10. michelle has a score of 87. convert michelle score to a z-score?

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14-07-2019

Answer:

z-score = 2.

Step-by-step explanation:

The z-score = (x - m) / d where x =the person's score, m = the mean and d = the standard deviation.

So we have (87-67)/10

= 2.

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