Homework Help: Hypergeometirc Distribution

Posted by Alicia on Wednesday, May 4, 2011 at 12:53pm.

From a lot of 12 flares, 4 are selected at random. If the lot contains 4 defective flares *flares that will not fire), what is the probability that all 4 will not work?
What is the probability that at most 2 will not work?

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