What is the probability there will be at least one call

Reference no: EM13314074

The number of telephone call coming in the business switchboard average 4 minutes/call. Let x be the number of calls received, Poisson variable.
a. What is the probability there will be at least one call in a given one minute period.
b. What is the probability that at least one call will be received in a given two minute period?

Reference no: EM13314074

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