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Problem 6-29 A quality-control inspector is testing sample output from a production process for widgets wherein 90% of the items are satisfactory (S) and 10%

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Problem 6-29 A quality-control inspector is testing sample output from a production process for widgets wherein 90% of the items are satisfactory (S) and 10% are unsatisfactory (U). Three widgets are chosen randomly for inspection. The successive quality events may be assumed independent. Find the probabilities for the following numbers of unsatisfactory items

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