Question

2itng shop has four presses and two repairmen. The amount of time a printing press wor before needing service is exponential with mean of 5 hours. Suppose that the amount of time it takes a single repairman to fix a achine is exponential with mean 4 hours (a) What is the average number of machines not in use? (b) What is the coefficient of loss for machines? cDuring what proportion of time are both repairmen busy? (d) What is the coefficient of loss for repairmen?

Answer 1

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