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The number of requests for assistance are received by a towing service at an average steady...

The number of requests for assistance are received by a towing service at an average steady rate of 4 per hour. If, during a normal day the requests are received independently of one another, compute the probability that exactly ten requests are received during a particular 2-hour period of a normal day. Suppose, that the dispatcher ignored at least one call between 225pm and 2:45pm. What is the probability that no more than one call was received during this time period? What is the probability that no more than one call is received between 2:45 pm and 300pm?

Math   Statistics-And-Probability   
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