Question: A call center has two customer service representatives. When both representatives are busy, the caller hears a busy signal.; no waiting is allowed. Callers who

A call center has two customer service representatives. When both representatives are busy, the caller hears a busy signal.; no waiting is allowed. Callers who receive a busy signal can call back later. Assume that the arrival of calls follows a Poisson probability distribution with a mean of 40 calls per hour. Assume each dispatcher can handle an average of 30 calls per hour. What percentage of time are both representatives idle? What percentage of time are both representatives busy?

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