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. A facility of m identical machines is sharing a single repair person. The time to...

. A facility of m identical machines is sharing a single repair person. The time to repair a failed machine is exponentially distributed with mean 1/λ. A machine, once operational, fails after a time that is exponentially distributed with mean 1/μ. All failure and repair times are independent. (a) Draw state transition diagram (b) Find out expression for the steady-state proportion of time where there is no operational machine.

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