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20 October, 07:39

On average, junior girls own 10 pairs of shoes with a standard deviation of 1.5 pairs of shoes. the distribution of shoes follows an approximately normal curve. what is the probability of selecting a junior girl that owns 12 or more pairs of shoes

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  1. 20 October, 08:08
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    Solve for z score:

    z (12) = (12-10) / 1.5=4/3

    then > / "less than and equal to"

    p (x>/12) = p (z>/4/3) =.0912
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