ECO100Y5 Chapter Notes - Chapter 3: Demand Curve, Economic Equilibrium, Inferior Good

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Supply and demand if often referred to as the laws of the marketplace at work ;to economics supply and. Demand means it is the model of how competitive market behalf . There was a ood in pakistan which is the fourth largest producers of cotton this oor resulted in higher jean and apparel. ; to compensate for the increase in price production companies adapted by making the buttons smaller, cheaper linings and polyester. Supply and demand: a model of a competitive market. A market is a group of producers and consumers who exchange a good or service for payment. Competitive market: is a market in which there are many buyers and sellers of the same good or service. Key feature of a competitive market is that no individual"s actions have notable effect on the price at which a good or service is sold. (*not accurate description of every market*)

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1. Characteristics of competitive markets

The model of competitive markets relies on these three core assumptions:

1.	There must be many buyers and sellers a few players can't dominate the market.
2.	Firms must produce identical products buyers must regard all sellers' products as equivalent.
3.	Firms and resources must be fully mobile, allowing free entry into and exit from the industry.

The first two conditions imply that all consumers and firms are price takers. While the third is not necessary for price-taking behavior, assume for this problem that a market cannot maintain competition in the long run without free entry.

Identify whether or not each of the following scenarios describes a competitive market, along with the correct explanation of why or why not.

Scenario	Competitive?
The government has granted the U.S. Postal Service the exclusive right to deliver mail.	________________
Several stores in the mall sell hooded sweatshirts. Each store's sweatshirts reflect the style of that particular store. Additionally, some makers use higher-quality cotton than others, which is reflected in the apparel's prices.
Two taxi companies serve most of the market in a big city. Consumers don't care about which taxi company they take if they decide it's worth taking a taxi, they flag down the nearest one.	_________________
There are dozens of pasta producers that sell pasta to hundreds of Italian restaurants nationwide. The restaurant owners buy from the cheapest pasta producer available to

copperhamster111

The following table shows the market demand schedule and supply schedule for notebooks.

Price ($/unit)	Quantity Demanded (units)	Quantity Supplied (units)
1	20	4
2	16	6
3	14	10
4	12	12
5	10	14
6	7	17
7	4	20
8	2	22
9	1	25

Refer to the table above. Assume that the market for notebooks is in equilibrium.

1. Which of the following is likely to happen if there is an increase in the school enrollment rate, everything else remaining unchanged?

A. Both the equilibrium price and quantity of notebooks decrease.

B. The equilibrium price and quantity remain unchanged.

C. Both the equilibrium price and quantity of notebooks increase.

D. The equilibrium price increases, but the equilibrium quantity of notebooks decreases.

2. A shortage occurs in a market when:

A.price is lower than the equilibrium price.

B. price is higher than the equilibrium price.

C. supply exceeds demand.

D. the marginal utility of consumption is negligible.

3. A change in the quantity demanded of a good is:

A. the outcome of a change in income.

B. the outcome of a change in tastes and preferences.

C. represented by a shift to a new demand curve.

D. represented by a movement along the demand curve.

4. The following table shows the demand schedules of three consumers of wine. Assume that these three buyers constitute the entire market.

PRICE ($/Bottle)	Sandra's Demand (Bottles)	David's Demand (Bottles)	Mary's Demand (Bottles)
â$8	2		10
â$6	14	15	18
â$4		23	24
â$2	24	27	28

Refer to the table above. If the market price of wine is $8/bottle, and the market demand for wine is 19 bottles, David's consumption of wine is:

A. 12 bottles.

B. 9 bottles.

C. 4 bottles.

D. 7 bottles.

5. Which of the following factors will NOT cause a shift in the demand for a good?

A. A change in the number of consumers

B. A change in the market price of the good

C. A change in tastes and preferences

D. A change in consumer incomes

6. Are all markets perfectly competitive?

A. No, there are other market types where firms have considerable power to control the price.

B. Yes, any economic system with a market structure is by definition perfectly competitive.

C. No, there are also command and control markets that are run by a central government.

D. No, in other types of markets, sellers offer identical goods and simply accept the market price.

7. Assume that a seller in a perfectly competitive market charges more than the equilibrium price. It is likely that this seller will:

A. increase his profit.

B. lose only a few buyers.

C. increase his sales.

D. lose almost all of his buyers.

8. The willingness to pay for a commodity:

A. increases as the consumption of the commodity increases.

B. is always less than the market price of the commodity.

C. decreases as the consumption of the commodity increases.

D. is always greater than the market price of the commodity.

9. Which of the following is likely to lead to a right shift in the supply curve of cotton?

A. An increase in labor productivity due to training programs

B. A rise in labor costs due to wage demands by labor unions

C. An increase in the price of cotton

D. A decrease in the price of cotton

10. The buyers of a good will want to purchase it as long as their willingness to pay for the good is:

A. equal to zero.

B. greater than or equal to the price.

C. greater than zero.

D. less than the price.

redmammoth450

Question 1 If it was impossible to have a comparative advantage, there would be no gains from trade. True False 4 points

Question 2 If the price of Good X is $10 and price of Good Y is $15, the slope of the budget constraint is 1.5. True False 4 points

Question 3 If the demand and supply curves have equal slopes in absolute value, the burden of a commodity tax will be split equally regardless of on whom the tax is placed. True False 4 points

Question 4 Suppose that supply is fixed at 100 units and demand is Q = 500 P. A price ceiling of $100 creates a shortage of 400 units. True False 4 points

Question 5 Housing shortages caused by rent controls are larger in the long run because the supply of housing is more elastic in the long run. True False 4 points

Question 6 Firms should exit the industry if average costs are greater than marginal costs. True False 4 points

Question 7 If a 3.67 percent increase in price causes a 1.97 percent decrease in quantity demanded, then total revenue must fall following an increase in price. True False 4 points

Question 8 Which of the following choices best illustrates the concept of Adam Smith's invisible hand ? A Vietnamese farmer grows rice; an exporter ships it to the United States, and a grocer in New York sells it to a customer. A fishery's stock of fish becomes depleted due to overfishing as boats from around the world converge. A government regulates a firm to clean up the pollutants it has released as part of its production process. An apartment building is built, which provides much needed housing, on the site of the only playground for children in that town. 4 points

Question 9 Figure: Labor Supply and Welfare Refer to the figure. The budget constraint is: ABC. BD. ABDC. ABD. 4 points Question 10 The price of coffee has increased, yet evidence suggests the demand for coffee has been stable. A possible explanation is that: there has been no change in the supply of coffee. there has been increased use of subsidies in coffee production. wages of workers in coffee production might have decreased. wages of workers in coffee production might have increased. 4 points Question 11 Which of the following statements is TRUE regarding profit maximization in competitive markets? I. When all firms pursue profits, none of them achieve profits. II. When all firms pursue profits, only the most innovative will achieve profits. III. Production is divided in such a way that total costs of production are minimized. I only II only I and III only II and III only 4 points Question 12 Suppose France can produce four phones or three computers with one unit of labor, and Sweden can produce one phone or two computers with one unit of labor. If France can trade only with Sweden, then the theory of comparative advantage suggests that: France should specialize in producing phones and import computers from Sweden. France should specialize in producing computers and import phones from Sweden. France should produce both phones and computers, and import nothing from Sweden. France should import both phones and computers from Sweden. 4 points Question 13 Potato chips and popcorn are substitutes. A subsidy for potato chips will ______the demand for popcorn and the quantity of popcorn sold will ______. (Table: Barrels of Oil) Refer to the table. What is the total amount of producer surplus (per barrel of oil) earned by all four producers if the market price per barrel of oil is $51? Table: Barrels of Oil Minimum willingness to sell Country a single barrel of oil Country A $32.00 Country B 16.00 Country C 17.25 Country D 56.99 increase; increase increase; decrease decrease; decrease decrease; increase 4 points Question 14 In the market for Good X a necessity good without any good substitutes the workers and capital in the industry can easily find work producing other goods. The burden of the tax is likely to fall: more heavily on buyers, given that demand is more inelastic than supply. evenly between buyers and sellers. more heavily on sellers, given that supply is more inelastic than demand. more heavily on buyers, given that demand is more elastic than supply. 4 points Question 15 A U.S. manufacturer arranges to purchase parts from a German supplier for 500,000 euros in six months. The U.S. manufacturer is concerned that the dollar will depreciate against the euro, meaning the dollar cost of the 500,000 euros will rise. What should the U.S. manufacturer do? lobby the Fed to lower interest rates on six-month T-bills buy a futures contract that fixes the dollar cost of 500,000 euros in six months buy an exchange rate contract that pegs the interest rate to the discount rate on interbank loans sell a naked option to cover the output spread 4 points Question 16 Which of the following scenarios would cause a speculator to buy low and sell high ? Farmers expect to have a bumper harvest of corn next year. Imports of corn begin to flood the country. The government is expected to pass legislation making it mandatory for all vehicles to use corn-based fuels within one year. The government is expected to subsidize corn production for farmers. 4 points Question 17 In a market with a price ceiling which of the following is TRUE? Buyers and sellers experience unexploited gains from trade. Resources are allocated to their most efficient uses. The supply of goods is sold by the sellers with the lowest costs. The supply of goods is bought by the buyers with the highest willingness to pay. 4 points Question 18 Consider the following statements: I. Relative to a no-trade situation, if the United States exported wheat, the U.S. domestic wheat price would rise and domestic production of wheat would expand. II. Relative to a no-trade situation, international trade causes prices of all goods to rise. I is true; II is false. I is false; II is true. Both I and II are true. Both I and II are false. 4 points Question 19 As the price of a good fluctuates, a profit-maximizing firm will expand or contract production along its: average cost curve. average product curve. marginal cost curve. marginal product curve. 4 points Question 20 An increase in demand and a decrease in supply occur in a market. What happens to the equilibrium price and quantity? The equilibrium price decreases; the change in the equilibrium quantity is ambiguous. The equilibrium price decreases; the equilibrium quantity increases. The equilibrium price increases; the change in the equilibrium quantity is ambiguous. The equilibrium price increases; the equilibrium quantity decreases.

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ECO100Y5 Chapter Notes - Chapter 3: Demand Curve, Economic Equilibrium, Inferior Good

ECO100Y5 Full Course Notes

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