Question 3 (20 points) Answer the following questions and enter answers with format indicated into the respective answer boxes: a. Which is preferable - long, but infrequent machine tooling changeovers; or, short, but more frequent changeover times? Answer format: enter either long or short. b. to is the average natural (no detractors) process time at a workstation and is increased to the effective process time te by "detractors" such as machine downtime (availability) and more lengthy setup times between jobs. Calculate te given a to = 2 minutes with an Availability of 75% and a setup time of 20 minutes of every 40 jobs. Give your answer in minutes to one decimal place. c. What is the coefficient of variation CV for the te from (b) and a standard deviation of effective process time at a station of 2.7 minutes. Give answer to two decimal places with a leading zero before the decimal. d. Is the CV from (c) a low, moderate, or high variability class. Enter low, moderate, or high in answer box. e. In a low utilization (non-bottleneck) station, what determines the variability of the flow out of that station? Select either the parts arrival variability or the station variability. Enter either arrival or station. A/ AJ