Poisson Distribution

Poisson Distribution - Q.,ameanof3.3 ,inanyhour,lessthan5...

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Q. At the Fidelity Credit Union, a mean of 3.3  customers arrive hourly at the drive-through window.  What is the probability that, in any hour, less than 5  customers will arrive? What is the standard  deviation? Q. The computer that controls a bank’s ATM  machine crashes a mean of 0.4 times per day. The  number of crashes follows a Poisson distribution.  What is the probability that in a 7-day week, the  computer will crash more than 5 times?
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Q. A company produces optical-fiber cable with a  mean of 0.7 flaws per 100 feet. The number of flaws  follows a Poisson distribution. What is the probability 
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