SOLUTION: Use the Poisson model to approximate the probability. Round your answer to four decimal places.
The probability that a call received by a certain switchboard will be a wrong num
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-> SOLUTION: Use the Poisson model to approximate the probability. Round your answer to four decimal places.
The probability that a call received by a certain switchboard will be a wrong num
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Question 1189864: Use the Poisson model to approximate the probability. Round your answer to four decimal places.
The probability that a call received by a certain switchboard will be a wrong number is 0.02. Use the Poisson distribution to approximate the probability that among 120 calls received by the switchboard, there are no wrong numbers. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! E(X)=120*0.02=2.4=np the Poisson parameter (do the same thing with a lottery problem)
probability is e^(-2.4)*2.4^0/0!
=0.0907
Modest accuracy as n is not large and p is not infinitesimally small
Actual value is 0.98^120=0.0082
