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6 September, 14:35

Many families in california are using backyard structures for home offices, art studios, and hobby areas as well as for additional storage. suppose that the mean price for a customized wooden, shingle backyard structure is $3100. assume that the standard deviation is $1200.

a. what is the z-score for a backyard structure costing $2300

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  1. 6 September, 18:22
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    The z-score is calculated as -

    Z-score = (X - mean) / Standard deviation

    Given,

    Mean = $ 3100

    Standard deviation = $ 1,200

    X = 2,300

    Z-score = (2300 - 3100) / 1200 = - 0.67

    Thus, Z-score = - 0.67
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