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3 April, 14:38

The mean of a normally distributed group of weekly incomes for a group of executives is $2,400 and the standard deviation is $600. What is the z-score for an income of $1,500/week

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  1. 3 April, 17:52
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    The z-score is - 1.5

    Explanation:

    z-score = (income - mean) / standard deviation

    income = $1500

    mean = $2400

    standard deviation = $600

    z-score = ($1500 - $2400) / $600 = - $900/$600 = - 1.5
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