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9 May, 15:33

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the entire batch is accepted if every item in the sample is okay. A company just manufactured 796 CDs, and 205 are defective. If 3 of these CDs are randomly selected for testing, what is the probability that the entire batch will be accepted?

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  1. 9 May, 18:23
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    The probability that the first CD in the sample is not defective is 591/796 The probability that the second CD in the sample is not defective is 590/795 The probability that the third CD in the sample is not defective is 589/794

    P (sample has 0 defective CDs) = 591*590 * 589 796*795*794 =

    you can calculate
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