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A purchaser of electrical components buys them in lots of size 10. It is his policy...

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Statistics

A purchaser of electrical components buys them in lots of size10. It is his policy to inspect 3 components rendomly from a lotand to accept the lot only if all 3 are nondefective. If 30 percentof the lots have 4 defective components and 70 percent have only 1what proportion of lots does the purchaser reject?

What percentage of i defective lots does the purchaser reject?Find it for i =1,4. Given that a lot is rejected, what is theconditional probability that it contained 4 defectivecomponents.

( I need the second part. I got the first question.)

Answer & Explanation Solved by verified expert
4.1 Ratings (761 Votes)
Probability to accept the lots with 4 defective components Probability that all 3 selected components are nondefective 6C3 4C0 10C3 20120 16 Using hypergeometric probability where defective 4 nondefective components is 6    See Answer
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