Even though insignificant explanatory variables can raise the adjusted R2 of a demand function, one should not interpret their effects on the regression when
a. testing marketing hypotheses about the determinants of demand
b. analyzing inventory relative to capacity requirements
c. forecasting unit sales for operations planning
d. sales revenue reaches its peak
e. planning for capital budgets
a
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If a firm finds that the wage rate (W) is less than the value of marginal product (VMP), then to maximize its profit the firm should hire
A) less labor, which will increase the VMP. B) more labor, which will decrease the VMP. C) no more or less labor, because profits are greatest when W < VMP. D) more labor, because hiring more labor will increase both W and VMP until they are equal.
What is Jim's opportunity cost of operating his own business?
a. the total amount of money he puts into capital equipment b. the value of his labor that is put into the business c. the cost of hiring his laborers d. All of the above are correct.
Refer to the figure below.________ inflation will eventually move the economy pictured in the diagram from short-run equilibrium at point ________ to long-run equilibrium at point ________, 
A. Rising; B; C B. Falling; A; C C. Falling; A; B D. Rising; A; C
If the opportunity costs of producing a good increase as more of that good is produced, the economy's production possibility frontier will be
A. a negatively sloped straight line. B. negatively sloped and "bowed inward" toward the origin. C. negatively sloped and "bowed outward" from the origin. D. a positively sloped straight line.