A technician monitors a group of 6 computers that run an automated manufacturing facility. It takes an average of 10 minutes (negative exponentially distributed) to adjust a computer that develops a problem. On average, one of the computers requires adjustment every 65 minutes (Poisson distributed).

a) average number of computers waiting for adjustments

b) average number of computers not in working order

c) probability the system is empty

d) average time in the queue

e) average time in the syatem

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