Using the information presented in the following table, answer the following questions. (Hint: First determine the total job time for each job by calculating the total processing time for the job and then adding in the setup time. All times are in hours.)

A. Identify the processing sequence that would result using priority rules.

RULES sequence

MST

SPT

EDD

CR

B. For each priority rule, determine (1) average flow time, (2) average hours late, and (3) average WIP. (Round the final answers to 2 decimal places.)

average flow time MST SPT EDD CR

average hour rate

wip

C. Is one priority rule superior to the others? Yes or no

Job a b Due Hour 4 Processing Time (hr) per Unit 0.14 0.25 0.10 0.25 0.10 U 9000 Units per Job 45 14 18 40 75 Setup Time (hr) 0.7 0.5 0.2 1.0 0.5 10 12 20 15