The Probability That a Call Received by a Certain Switchboard

question 8

Multiple Choice

The probability that a call received by a certain switchboard will be a wrong number is 0.01.Use the Poisson approximation to the binomial distribution to find the probability that among 120 calls received by the switchboard,there are no wrong numbers.

• A)0.6988
• B)0.3012
• C)0.3614
• D)0.6386
• E)0.3313