Minutes between successive arrivals

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Arrivals at a telephone booth are considered to be poison, with an average time of 10 minutes between successive arrivals. The length of a phone call is distributes exponentially with mean3 minutes. The probability that an arrival does not have to wait before service is (a) 0.3 (b) 0.5 (c) 0.7 (d) 0.9

Reference no: EM13948432

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