The following list of jobs in a critical department includes estimates of their required times: JOB ABCDEFGH REQUIRED TIME (DAYS) 11 14 5 12 7 4 6 1 DAYS TO DELIVERY PROMISE 12 7 10 14 The mean flow time -7(late) 8 -7(late) 11 a. Use the shortest operation time rule to schedule these jobs. What is the mean flow time? (Round your answer to 3 decimal places.) SLACK 1 -7 5 2 -14 4 -13 10 days b. The boss does not like the schedule in a. Jobs E and G must be done first, for obvious reasons. (They are already late.) Reschedule the jobs by assigning E and G first and second, respectively, and then assigning the remaining jobs using the shortest operation time rule. What is the new mean flow time?

The following list of jobs in a critical department includes estimates of their required times: a. Use the shortest operation time rule to schedule these jobs. What is the mean flow time? (Round your answer to 3 decimal places.) b. The boss does not like the schedule in a. Jobs E and G must be done first, for obvious reasons. (They are already late.) Reschedule the jobs by assigning E and G first and second, respectively, and then assigning the remaining jobs using the shortest operation time rule. What is the new mean flow time