SOLUTION: In a group of 100 batteries, 30 are dead. if you choose 5 how many would you expect to work?

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Question 320191: In a group of 100 batteries, 30 are dead.
if you choose 5 how many would you expect to work?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In a group of 100 batteries, 30 are dead.
if you choose 5 how many would you expect to work?
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P(good battery) = 70/100 = 0.7
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Expected number of good in 5 = 5*0.7 = 3.5
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Cheers,
Stan H.