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February 28, 2015

February 28, 2015

Posted by **Jennifer** on Friday, December 9, 2011 at 8:30am.

- statistics -
**Reiny**, Friday, December 9, 2011 at 10:21amProb 0 defective = (.93)^20

prob 1 defective = C(20,1) (.93)^19 (.07)

prob 2 defective - C(20,2) (.93)^18 (.07)^2

prob (at most 2 defective) = 1 - (sum of the above 3 probs)

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