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# MGT 455 WEEK 6 CHAPTER 9 PROBLEM SET

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9.11
Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predeces sors for the tasks are as follows:

Rosenberg's goal is to produce 180 PDAs per hour.

a) What is the cycle time?

b) What is the theoretical minimum for the number of workstations that Rosenberg can achieve in this assembly line?

c) Can the theoretical minimum actually be reached when workstations are assigned?

9.13
Sue Helms Appliances wants to establish an assembly line to manufacture its new product, the Micro Popcorn Popper. The goal is to produce five poppers per hour. The tasks, task times, and immediate predecessors for producing one Micro Popcorn Popper are as follows

a) What is the theoretical minimum for the smallest number ofworkstations that Helms can achieve in this assembly line?

b) Graph the assembly line and assign workers to workstations.Can you assign them with the theoretical minimum?

c) What is the efficiency of your assignment?

9.15
The following table details the tasks required for Indiana-based Frank Pianki Industries to manufacture a fully portable industrial vacuum cleaner. The

a) Draw the appropriate precedence diagram for this production line.

b) Assign tasks to workstations and determine how much idletime is present each cycle.
c) Discuss how this balance could be improved to 100%.

d) What is the theoretical minimum number of workstations?

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