Modify Model 301 (in book examples) with all of the following changes.
1. Add a second machine to which all parts go immediately after exiting the first machine for a separate kind of processing (e.g.., the first machine is drilling and the second machine is waching), Processing times at the second machine are the same as for the first machine. Gather all the statistics as before, plus the time in queue length, and utilization at the second mahine.
2. Immediately after the second machine, there's a pass/fail inspection that takes a constant 5 minutes to carry out and has an 80% chance of a passing result; queueing is possible at inspection, and the queue is first-in, first-out. All parts exit the system regardlessf of whether they pass the test. Count the number that fail and the number that pass, and gather statistics on the time in queue, queue length, and utilization at the inspection center.
(HINT : Try the decide flowchart module.)
3. Add plots to track the queue length and number busy at all three stations.
4. Run the simulation for 480 minutes instead of 20 minutes.