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12 January, 01:42

I'm a batch 280 water purifiers 12 were found to be defective what is the probability that a water purifier chosen at random will be defective

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  1. 12 January, 01:52
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    You divide 280 with 12 and then say the probability of a water purifier at chosen is ... then instead of leaving your answer all alone ad a percentage (%) at the end. So it would be 23.3 %
  2. 12 January, 02:09
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    Total water purifiers = 280

    Total defective ones = 12

    P (defective) = 12/280 = 3/70

    Answer: 3/70
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