A manual assembly line is to be designed to make a small consumer product. There is one worker per station. The work elements, their element times, and precedence constraints are given in the table below. (a) (10 pts) Construct the precedence diagram for this job; (b) (18 pts) If the cycle time = 1.8 min, repositioning time = 0.1 min, use the ranked positional weights method to assign work elements to stations. (c) (4 pts) Compute the balance efficiency and balance delay for your solution. Preceded Preceded Element Time Te Element Time Te by: by: 1 0.4 min 6 0.9 min 4 2 0.3 min 1,3 7 0.4 min 4,5 3 0.7 min 8 1.0 min 6,7 0.6 min 3 9 0.3 min 7 5 0.8 min 2,4 10 0.5 min 8,9