Question: plzz answer clearly a,b,c,d all part 4. An operator handles adjustments for a group of 8 machines. Adjustment time is exponentially distributed and has a

plzz answer clearly a,b,c,d all part 4. An

plzz answer clearly a,b,c,d all part

4. An operator handles adjustments for a group of 8 machines. Adjustment time is exponentially distributed and has a mean of 12 minutes per machine. The machines operate for an average of 85 minutes between adjustments. While running, each machine can turn out 55 pieces per hour. Now find: a. The average number of machines waiting for adjustment. (1.25 Marks) b. The average number of machines being serviced. (1.25 Marks) c. Average downtime. (1.25 Marks) d. The probability that a machine will have to wait for an adjustment. (1.25 Marks)

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