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31 July, 13:40

The results of a common standardized test used in psychology research is designed so that the population mean is 135 and the standard deviation is 30. A subject earns a score of 198. What is the z-score for this raw score?

z-score=

+3
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  1. 31 July, 14:03
    0
    2.1

    Step-by-step explanation:

    Mean+z score (Standard deviation) = raw score

    Let the z score be z

    135+z (30) = 198

    30z=63

    z=2.1
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