A committe is served by two cab companies.Each company owns two cabs and be equally.The average time per ride is 12 minutes.Calls arrive according to poisson.The two companies recently were brought by an invester .The owner was advised by a consultant that one way to reduced for the dispatching office to inform new customers of potential excessive delay once the customers.Find 1) expected number of idle cabs 2) find the probability that customers will be the last on the list.
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