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11 June, 18:05

A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 8 minutes in your store and that these times are normally distributed. Find the probability that a randomly selected shopper will spend less than 20 minutes in the store.

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  1. 11 June, 18:32
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    Answer: 0.401294

    Step-by-step explanation:

    z=x-μ/σ

    z=20-22/8

    z=-0.25

    the probability for this z-score is 0.401294.
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