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OpenStudy (anonymous):
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 140 calls received by the switchboard, there are no wrong numbers.
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OpenStudy (anonymous):
I am doing the problem right now and could use some help.
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