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8 July, 00:29

The average cost per slice of pizza is 88 cents with a standard deviation of 5 cents what is the z score of a slice of pizza with a cost of 99 cents

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  1. 8 July, 03:36
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    Z = (x - μ) / σ

    ... = (99 - 88) / 5

    ... = 11/5

    ... = 2.2

    The z score is 2.2.
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