Question: Please answer the question precisely, I have doubt about the final answer. The job times and precedence relationships for this problem are summarized in the

Please answer the question precisely, I have doubt about the final answer.

The job times and precedence relationships for this problem are summarized in the following table. Task |3 4 5 6 7 8 9 10 11 3 12 Immediate F predecessors 1 2 2 2 2 3,4 7 5 9,6 8,10 11 12 6 6 2 2 12 7 5 1 4 6 7 Time (minutes) Question: (a) Draw the corresponding precedence diagram. (b) Calculate the positional weight of the 12 tasks. (c) Suppose that the company is willing to hire enough workers to produce one assembled machine every 15 minutes (i.e. cycle time=15). How many stations are required for the optimal balance? (Hint: must satisfy the precedence constraint and be sure to use less time than 15 minutes on each station) (d) Calculate the balance delay and efficiency of the line in part (c)

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