The table above shows sales of the firms in the chocolate industry. The four-firm concentration ratio in the industry is

One of the leading alternative theories to the HO model of international trade is the Human Skills theory, which was developed by

A) Donald Keesing. B) Adam Smith. C) David Ricardo. D) G. D. A. MacDougall.

When measuring the substitution effect, one uses the change along

A) the old indifference curve. B) the new indifference curve. C) either the old or the new indifference curve. D) the budget constraint.