A) An increase in consumers' preferences for corn.
B) An increase in the labour costs of producing corn.
C) An increase in consumers' income if corn is a normal good.
D) An improvement in the technology of producing corn.
E) An increase in consumers' income if corn is an inferior good.
Correct Answer
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Multiple Choice
A) surplus exists but nothing happens until either the demand or the supply changes.
B) surplus exists and the price rises to restore equilibrium.
C) shortage exists and the price rises to restore equilibrium.
D) surplus exists and the price falls to restore equilibrium.
E) shortage exists and the price falls to restore equilibrium.
Correct Answer
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Multiple Choice
A) Consumers purchased more computers because of the Christmas season, and the labour costs of producing desktop computers decreased.
B) Desktop computers are a normal good and incomes increased, while the labour costs of producing personal computers increased.
C) The price of a laptop computer, a substitute for desktop computers, fell and the cost of producing desktop computers decreased.
D) Desktop computers are a normal good and incomes decreased, while the labour costs of producing personal computers increased.
E) Desktop computers are a normal good and incomes increased, while more firms entered the market.
Correct Answer
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Multiple Choice
A) the price of the good changes when people's demand for the good changes.
B) demand changes when people's incomes change.
C) the quantity demanded changes when the demand for the good changes.
D) the quantity demanded changes when the price of the good changes.
E) demand changes when the prices of substitutes and complements change.
Correct Answer
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Multiple Choice
A) quantity of sweaters supplied decreases.
B) quantity of sweaters supplied increases.
C) supply of sweaters decreases and the demand for sweaters does not change.
D) supply of sweaters increases AND the demand for sweaters increases.
E) supply of sweaters increases and the demand for sweaters does not change.
Correct Answer
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Multiple Choice
A) results in a movement from point b to point a.
B) results in a movement from point a to point b.
C) shifts the supply curve from S to S2.
D) shifts the supply curve from S to S1.
E) has no effect.
Correct Answer
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Multiple Choice
A) an increase in the demand for petrol.
B) a decrease in the quantity of petrol demanded.
C) a decrease in the demand for petrol.
D) no change in the quantity of petrol demanded.
E) More information is needed to determine if the demand for petrol increases or decreases.
Correct Answer
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Multiple Choice
A) A
B) B
C) C
D) D
E) E
Correct Answer
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Multiple Choice
A) The quantity supplied decreases.
B) The supply increases.
C) The supply decreases.
D) The quantity supplied increases.
E) Both answers B and D are correct.
Correct Answer
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Multiple Choice
A) there is a shortage and the price of t-shirts will fall.
B) there is a surplus and the price of t-shirts will rise.
C) there is a surplus and the price of t-shirts will fall.
D) there is a shortage and the price of t-shirts will rise.
E) the market is in equilibrium.
Correct Answer
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Multiple Choice
A) might rise, fall or not change, but the change can never be predicted.
B) might rise, fall or not change depending on whether the effect from the producers is greater or less than the effect from the consumers.
C) falls.
D) rises.
E) does not change.
Correct Answer
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Multiple Choice
A) rises; increases
B) falls; increases
C) rises; decreases
D) falls; decreases
E) does not change; decreases
Correct Answer
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Multiple Choice
A) an increase in the quantity of pizza supplied.
B) a decrease in the supply of pizza.
C) an increase in the supply of pizza.
D) a decrease in the quantity of pizza supplied.
E) None of the above answers is correct.
Correct Answer
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Multiple Choice
A) a decrease in supply.
B) a decrease in demand.
C) an increase in supply.
D) an increase in demand.
E) None of the above answers is correct.
Correct Answer
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Multiple Choice
A) A decrease in the number of smart phone buyers.
B) An increase in the price of smart phones.
C) A decrease in the price of smart phones.
D) An increase in the supply of smart phones.
E) An increase in the price of land-line phone service, a substitute for smart phones.
Correct Answer
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Multiple Choice
A) cannot show a change in demand for a good.
B) is upward sloping.
C) is the vertical sum of individual demand curves.
D) cannot show how quantity demanded changes in response to a change in price.
E) is the horizontal sum of individual demand curves.
Correct Answer
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Multiple Choice
A) market demand for soft drinks decreases.
B) market demand for soft drinks does not change.
C) there is a movement along the market demand curve for soft drinks.
D) market demand for soft drinks increases.
E) None of the above answers is correct because the effect on demand depends whether the supply curve shifts rightward, leftward or not at all.
Correct Answer
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Multiple Choice
A) 60,000 and $50.
B) 80,000 and $80.
C) 40,000 and $20.
D) 50,000 and $100.
E) 100,000 and $20.
Correct Answer
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Multiple Choice
A) add the prices that each buyer will pay at every quantity.
B) add the quantities that each buyer will purchase at every price.
C) give up because there is no way to find the market demand.
D) average the price each buyer is willing to pay for each given quantity.
E) multiply the price times quantity for each buyer and then add the resulting products together.
Correct Answer
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Multiple Choice
A) a physical place where people buy only goods.
B) any arrangement that brings buyers and sellers together.
C) a place where one good is bartered for another.
D) a physical place where people buy both goods and services.
E) a store where people buy physical goods.
Correct Answer
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