Macroeconomics is concerned with the whole economy or its major sectors.

Suppose the income of buyers in a market for an inferior good decreases and a technological advancement occurs also. What would we expect to happen in the market?

a. Equilibrium price would decrease, but the impact on equilibrium quantity would be ambiguous. b. Equilibrium quantity would increase, but the impact on equilibrium price would be ambiguous. c. Equilibrium quantity would decrease, but the impact on equilibrium price would be ambiguous. d. None of the above is correct.

People are willing to pay more for a diamond than for a bottle of water because

a. the marginal cost of producing an extra diamond far exceeds the marginal cost of producing an extra bottle of water. b. the marginal benefit of an extra diamond far exceeds the marginal benefit of an extra bottle of water. c. producers of diamonds have a much greater ability to manipulate diamond prices than producers of water have to manipulate water prices. d. water prices are held artificially low by governments, since water is necessary for life.