YBox video game players arrive at a two-person station for testing. The inspection
time per YBox set is EXPO(10) minutes. On an average 82% of the sets pass inspection. The remaining 18% is routed to an adjustment station with a single operator.
Adjustment time per YBox is UNIF(7,14) minutes. After adjustments are made, the
units are routed back to the inspection station to be retested. Build an Arena™ simulation model of this system. Use a replication length of 30,000 minutes.
(a) Perform a warm-up analysis of the total time a set spends in the system and
estimate the system time to within 2 minutes with 95% confidence.
(b) Collect statistics to estimate the average number of times a given job is adjusted.
(c) Suppose that any one job is not allowed more than two adjustments, after which
time the job must be discarded. Modify your simulation model and estimate the
number of discarded jobs.