A technician monitors a group of five computers in an automated manufacturing facility. It takes an average of 15 minutes, exponentially distributed, to adjust any computer that develops a problem. The computers run for an average of 85 minutes, Poisson distributed, without requiring adjustments. Compute the following measures.
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Average number of computers waiting for adjustment.
Average number of computers not in working order
Probability the system is empty
Average time in the queue
Average time in the system