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Answer the following questions and enter answers with format indicated into the respective answer boxes: a....

Answer the following questions and enter answers with format indicated into the respective answer boxes:

a. Which is preferable - long, but frequent machine tooling changeovers; or, short, but infrequent changeover times? Answer format: enter either long or short.

b. t0 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 for a welding robot given a t0 = 1 minute with an Availability of 75% and a setup time of 2 minutes of every 10 jobs. Give your answer in minutes to two decimal places.

c. What is the coefficient of variation CV for the tefrom (b) and a standard deviation of effective process time at a station of 2.5 minutes. Give answer to two decimal places.

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) low variability station, what is the variability of the flow out of that station if the parts arrival variability is high? Enter either high or low.

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