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22 September, 13:44

Which is relatively better: a score of 79on a psychology test or a score of 48on an economics test? scores on the psychology test have a mean of 85and a standard deviation of 5. scores on the economics test have a mean of 52and a standard deviation of 3?

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  1. 22 September, 13:51
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    Psychology

    z = (48-87) / 14

    z = - 2.796

    Economics

    z = (52-53) / 8

    z = - 0.125

    The score of Economics is better.
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