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6 August, 22:00

Fourteen of the 100 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability you randomly select an item that is not defective?

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  1. 6 August, 22:21
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    P (non-defective) = 43/50

    First, you subtract 14 from 100 to get the number of non-defective video recorders.

    Then, you reduce the fraction of 86/100 to 43/50.
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