The Probability That a Call Received by a Certain Switchboard

question 30

Multiple Choice

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 150 calls received by the switchboard, there are at least two wrong numbers. Round your answer to four
Decimal places.

• A) 0.8009
• B) 0.7760
• C) 0.2240
• D) 0.1991
• E) 0.5768

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1970s

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