Question 1.  Which of the following provides the best evidence that economies of scale exist?
a. The per-unit costs on Excel Publishing Company's manuals fell following a large order from the government.
b. Alpha-Beta Inc. raised its price 10% following a 5% increase in production costs.
c. Widget Manufacturing doubled its production by opening a new plant that was identical to its old plant.
d. The XYZ Co. increased production 25% following a 30% increase in all inputs.
Question 2. The substitution effect refers to the decision to :
a.  work fewer hours when the wage rate goes down.
b.  work fewer hours when the wage rate goes up.
c.  look for a better job when the wage rate goes up.
d.  look for a better job when the wage rate goes down.
Question 3.  The income effect refers to the decision to:
a.  work more hours when the wage rate goes up.
b.  work more hours when the wage rate goes down.
c.  look for a better job when the wage rate goes up.
d.  look for a better job when the wage rate goes down.
Question 4.  If the government chooses a stabilization price which is above a price trend line, the quantity supplied of agricultural goods will tend to be:
a.  below the quantity demanded.
b.  above the quantity demanded.
c.  equal to the quantity demanded.
d.  sometimes above and sometimes below the quantity demanded.
Question 5.  Economic models:
a.  focus on every important aspect of economic reality.
b.  focus only on some aspects of a problem.
c.  do not involve value judgments because they are purely mathematical.
d.  are close representations of real-world economic reality.