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A waiting line or __________ is where items or people are in a line awaiting service;
__________ is a body of knowledge about waiting lines.
Explain, in your own words, how backward scheduling and forward scheduling differ.
Ten high-intensity bulbs are tested for 100 hours each. One failed at 40 hours; all others
completed the test. Calculate FR(%) and FR(N).
Identify and describe three methods used for decision making under conditions of
uncertainty.
A firm is considering adding a second secretary to answer phone calls and make
appointments. The cost of the secretary will be $10/hour and she will work 200 hours
each month. If each new client adds $400 of profit to the firm, how many clients must
the secretary arrange for the firm to break even? Suppose that the secretary has an equal
chance of providing either 0, 2, or 6 new clients each month. Should the firm hire the
secretary?
A manager is applying the transportation model of linear programming to solve an
aggregate planning problem. Demand in period 1 is 100 units and in period 2 demand is
150 units. The manager has 125 hours of regular employment available for $10/hour
each period. In addition, 50 hours of overtime are available for $15/hour each period. If
holding costs are $2 per unit each period, how many hours of regular employment
should be used in period 1 (assume demand must be met in both periods 1 and 2 for the
lowest possible cost and that production is 1 unit per hour)?
How might the transportation method be used to help a firm add a facility to an existing
distribution network? You may wish to describe a simple example.
Explain what the purpose of assembly line balancing is. Describe briefly how it is done.
Explain how assembly line balancing supports the needs of product layout.
A product is currently made in a process-focused shop, where fixed costs are $8,000 per
year and variable cost is $40 per unit. The firm currently sells 200 units of the product
at $200 per unit. A manager is considering a repetitive focus to lower costs (and lower
prices, thus raising demand). The costs of this proposed shop are fixed costs = $24,000
per year and variable costs = $10 per unit. If a price of $80 will allow 400 units to be
sold, what profit (or loss) can this proposed new process expect? Do you anticipate that
the manager will want to change the process? Explain.
