Question

The Big Manufacturing Company produces a particular product in an assembly line operation. One of the...

The Big Manufacturing Company produces a particular product in an assembly line operation. One of the machines on the line is a drill press that has a single assembly line feeding into it. A partially completed unit arrives at the press to be worked on every 7.5 minutes, on average. The machine operator can process an average of 10 parts per hour. Using the Poisson arrivals and exponential service time model,
a-what is the average number of parts waiting to be worked on?
b-what is the probability the operator has parts to work on?
c-what is the average time a unit spends in the system?
d-what is the probability there are 5 units in the system?

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