four of the 50 digital video recorders 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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14-11-2014
Mathematics

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four of the 50 digital video recorders 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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Kalahira Kalahira · Answer 1 · 2017-04-18T11:04:48-04:00

Kalahira Kalahira

18-04-2017

There are 4 defective digital video recorders out of 50 digital video recorders. Probability that a video recorder is defective = 4/50 = 2/25 = 0.08. Therefore, probability that a video recorder is not defective = 1 - 4/50 = 46/50 = 23/25 = 0.92
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