SOLUTION: the columbia power company experiences power failures with a mean of u = 0.210 per day. find the probability that there are exactly two power failures in a particular day?

Question 261167: the columbia power company experiences power failures with a mean of u = 0.210 per day. find the probability that there are exactly two power failures in a particular day?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The columbia power company experiences power failures with a mean of u = 0.210 per day. find the probability that there are exactly two power failures in a particular day?
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It's a Poisson problem with mu = 0.210 and x = 2
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P(2,0.210) = [e^(-0.210)(0.210)^2]/2! = 0.01787..
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If you use a TI-84 (or better) poisson(0.210,2) = same answer
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Cheers,
Stan H.

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