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Stats Question

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Bodhisattva
Posts: 878 - Karma: 137
Okay if there's a machine that creates a very high number of batteries...and there's a 2.5 percent chance that if chosen randomly, one of these manufactured batteries will be defective, what would be the chance that if 2 batteries are chosen, AT LEAST one will be defective? Would it be the probability of 1 being defective, plus the probability of 2 being defective or what? Thanks any help is appreciated

Oct 4 2012 12:19AM
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Aidan-G
Posts: 9411 - Karma: 10,798
It would be 1 minus the probability of 0 being defective
Oct 4 2012 12:21AM
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Obi-Wan-Jenobi
Posts: 951 - Karma: 119
there independent. so its probability of the 1st being bad plus the probablilty of the 2nd plus the probabilty of both. 2.5/100+2.5/100+((2.5/100)(2.5/100))
Oct 4 2012 12:32AM
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Bodhisattva
Posts: 878 - Karma: 137
Yes, thank you...this makes sense
Oct 4 2012 12:42AM
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