$3.$ Consider a workstation with $11$ machines $($in parallel$).$ each requiring one hour of process time per job with c$2$service $=5.$ Each machine costs $$10,000.$ Orders for jobs arrive at the rate of $10$ per hour with a c$2$arrival $=1$ and must be filled. Management has specified a maximum allowable average response time $($i$.$e$.,$ time a job spends at the station$)$ of two hours. Currently it is just over three hours $($check it$).$ One of the options you are considering is to perform more preventative maintenance so that mttf and mttr are reduced but the availability remains the same. The SCV for the service time would become c$2$service$=1.$ What would you predict for the average response time under these new conditions?