e a a, b 6. A U-form assembly line produces an item requiring six tasks as follows: Task a b d f Task time 5 4 12 2 3 7 Immediate predecessors d Each task requires a separate line location. Takt time is 14 seconds. (a) Draw the precedence diagram for this item. (b) Can the line be run using a single worker? Justify your response. (c) Assign tasks to stations (workers) using the RPW heuristic. Show your work via two tables like on p. 8-20 of your notes. How many workers are needed and what are worker utilizations and Z? (d) How good is your solution in (c), in terms of the # of workers needed? Explain. (e) Assign tasks to the U-line, showing both your work and final solution like on p. 8-24 of your notes, where the goal is to maximize walking across the line. e a a, b 6. A U-form assembly line produces an item requiring six tasks as follows: Task a b d f Task time 5 4 12 2 3 7 Immediate predecessors d Each task requires a separate line location. Takt time is 14 seconds. (a) Draw the precedence diagram for this item. (b) Can the line be run using a single worker? Justify your response. (c) Assign tasks to stations (workers) using the RPW heuristic. Show your work via two tables like on p. 8-20 of your notes. How many workers are needed and what are worker utilizations and Z? (d) How good is your solution in (c), in terms of the # of workers needed? Explain. (e) Assign tasks to the U-line, showing both your work and final solution like on p. 8-24 of your notes, where the goal is to maximize walking across the line