Reference no: EM13880857
A firm's production function is given by the equation Q = 12L.5K.5, where L, K, and Q are measured in thousands of units. Input prices are 36 per labor unit and 16 per capital unit.
a. Create a spreadsheet (based on the example shown) to model this production setting. (You may have already completed this step if you answered Problem S2 of Chapter 5. An algebraic analysis of this setting appears in this chapter's Special Appendix.)
b. To explore the shape of short-run average cost, hold the amount of capital fixed at K = 9 thousand and vary the amount of labor from 1 thousand to 2.5 thousand to 4 thousand to 5.5 thousand to 7.5 thousand to 9 thousand units. What is the resulting behavior of SAC? Use the spreadsheet optimizer to find the amount of labor corresponding to minimum SAC. What is the value of SACmin?
c. In your spreadsheet, set L = 9 thousand (keeping K = 9 thousand) and note the resulting output and total cost. Now suppose that the firm is free to produce this same level of output by adjusting both labor and capital in the long run. Use the optimizer to determine the firm's optimal inputs and LACmin. (Remember to include an output constraint for cell I3.)
d. Confirm that the production function exhibits constant returns to scale and constant long-run average costs. For instance, recalculate the answer for part (c) after doubling both inputs.
e. Finally, suppose the firm's inverse demand curve is given by P = 9 - Q/72. With capital fixed at K = 9 in the short run, use the optimizer to determine the firm's optimal labor usage and maximum profit. Then
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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1
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2
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COST ANALYSIS
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3
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Output
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36
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4
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Price
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8.50
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5
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Labor
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1.00
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Capital
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9.00
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6
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MPL
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18.00
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MPK
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2.00
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MR
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8.00
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7
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Revenue
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306
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8
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MRPL
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144.00
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MRPK
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16.00
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9
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MCL
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36.00
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MCK
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16.00
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Cost
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180
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10
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Avg. Cost
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5.00
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11
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12
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Profit
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126
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13
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