Calls for dial-in connections to a computer center arrive at an average rate of four per
Chapter 4, Problem 4.172(choose chapter or problem)
Calls for dial-in connections to a computer center arrive at an average rate of four per minute. The calls follow a Poisson distribution. If a call arrives at the beginning of a one-minute interval, what is the probability that a second call will not arrive in the next 20 seconds?
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