perceptual distortions
March 7, 2020
the production function
March 7, 2020

A firm can manufacture a product according to the production function:
Q = F(K,L) = K3/4L1/4.
a. Calculate the average product of labor, APL, when the level of capital is fixed at 81 units and the firm uses 16 units of labor.
Instruction: Round your responses to 3 decimal places.
3.375

What is the average product of labor when the firm uses 256 units of labor?
.422

b. Find an expression for the marginal product of labor, MPL, when the amount of capital is fixed at 81 units.
Instruction: The second response is the exponent on L in the expression. Round your responses to 2 decimal places.
MPL =
*L2*L^3
^
Then, illustrate that the marginal product of labor depends on the amount of labor hired by calculating the marginal product of labor for 16 and 81 units of labor.
Instruction: Round your responses to 3 decimal places.
MPL when L = 16:
.25

MPL when L = 81:
.075

c. Suppose capital is fixed at 81 units. If the firm can sell its output at a price of $200 per unit and can hire labor at $50 per unit, how many units of labor should the firm hire in order to maximize profits?
Instruction: Enter your response as a whole number.

A firm’s product sells for $4 per unit in a highly competitive market. The firm produces output using capital (which it rents at $25
per hour) and labor (which is paid a wage of $30 per hour under a contract for 20 hours of labor services). Complete the
following table and use that information to answer the questions that follow.
Instruction: Round your answers for Average Product of Capital and Average Product of Labor to 2 decimal places.
-1

 

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