SOLUTION: A homeowner finds that there is a 0.15 probability that a flashlight does not work when turned on.
1.If she has three flashlights, find the probability that at least one of them
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Question 1019021: A homeowner finds that there is a 0.15 probability that a flashlight does not work when turned on.
1.If she has three flashlights, find the probability that at least one of them works when there is a power failure.
2. Find the probability that the second flashlight works given that the first flashlight works.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Look at the possible outcomes.
First one, none work.
For all others, at least one works.
So if I calculate the probability that none work, I can find the probability that at least one works.
So then,
.
.
.
It's the same whether one works or not since they're independent events.
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