Econ 102 (Exam 1 – Ch. 2-7) – Flashcards

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True or False: When both the demand and supply curve shift, the curve that shifts with the smaller magnitude determines the effect on the undetermined equilibrium object.
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False
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True or False: When both the demand and supply curve shift, you can always determine the effect on price and quantity without knowing the magnitude of the shifts.
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False
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True or False: Value of the price elasticity of demand is not equal to the slope of the demand curve
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True
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Happens when two individuals produce efficiently and then make a mutually beneficial trade based on comparative advantage.
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Overall increase in production for both parties and they will obtain consumption outside the PPF
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Dispassionate development and testing of theories about how the world works.
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Scientific Method
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Highly simplified representation of a more complicated reality. -Used to study economic issues -i.e. Road map, model of human anatomy, model airplane
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Model
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Visual model of economy, shows how dollars flow through markets among households and firms.
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Circular - Flow Diagram
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1. Own factors of production, sell/rent to firms for income. 2. Buy and consume goods and services.
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Households
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1. Buy/hire factors of production, used to produce goods and services. 2. Sells goods and services
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Firms
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The resources the economy uses to produce goods and services. - i.e. Land, Labor, and Capital (buildings and machines used in production)
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Factors of Production
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Graph showing the combinations of 2 goods economy can possibly produce given available resources and available technology.
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Production Possibilities Frontier (PPF)
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What does the PPF look like when there is increasing opportunity cost? May be cause by: -Different workers have different skills -Different opportunity costs of producing one good in terms of other -Other resource or mix of resource with varying opportunity costs
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Bow Shaped
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What must be given up to obtain that item
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Opportunity Cost
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Tells you the opportunity cost of one good in terms of the other -Consider lowest opportunity cost.
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Slope of PPF
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Study of how households and firms make decisions and how they interact in markets.
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Microeconomics
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Study of economy-wide phenomena, including inflation, unemployment, and economics growth.
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Macroeconomics
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Attempt to describe the world as it is. Can be confirmed or refuted. -Economists = Scientists
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Positive Statements
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Attempt to describe how world should be. Cannot be confirmed or refuted. -Include opinions? -Economists = Policy Advisors
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Normative Statements
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A simplified representation of some aspect of the economy.
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Economic Model
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Movement along the PPF or Shift? -Technological advancement in a specific product.
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Shift
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Movement along the PPF or Shift? -Change in consumer preferences.
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Movement along the PPF
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Goods produced domestically and sold abroad
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Exports
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Goods produces abroad and sold domestically.
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Imports
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Ability to produce a good using fewer inputs than another producer.
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Absolute advantage
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Ability to produce a good at a lower opportunity cost than another producer. Formulas: -Time: Current/other -Production: Other/Current
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Comparative Advantage
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Which goods will a nation typically import?
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Those goods in which other nations have a comparative advantage.
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True or False: If trade is good for a country, it must be good for everyone in the country.
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False
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-Income (Normal-Positive vs. Inferior-Negative) -Price of related goods (Substitute-positive vs. Complement-Negative) -Tastes (i.e. increase in the number of consumers) -Expectations -Number of buyers *Curve shifts when there is a change in a relevant variable that is not measured on either axis
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Variables that can shift the demand curve
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A change in price of the good itself.
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Movement along the demand/supply curve
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-Input Prices -Technology -Expectations -# of Sellers *Curve shifts when there is a change in a relevant variable that is not measured on either axis
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Variables that shift the supply curve
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Formula for Price Elasticity of Demand
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((% Change in Qdemanded) / (% Change in Price))
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Midpoint Formula
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((Q2-Q1) / (Average of Q) / (P2 - P1) / (Average of P))
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Relationship between price and total revenue when demand is INELASTIC
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Price and Total Revenue are directly related
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Relationship between price and total revenue when demand is ELASTIC
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Price and Total Revenue are inversely related
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Relationship between price and total revenue when demand is UNIT ELASTIC
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Total Revenue remains constant when price changes
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Do luxuries tend to have large or small income elasticities?
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Large
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Do necessities, such as food and clothing, tend to have large or small income elasticities?
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Small
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Income Elasticity of Demand Formula -Positive = ? -Negative = ?
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((% Change in Qdemanded) / (% Change in income)) -Positive = Normal Good -Negative = Inferior Good
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Cross - Price Elasticity of Demand -Positive = ? -Negative = ?
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((% Change in Qdemanded of good 1) / (% Change in price of good 2)) -Positive = Substitute -Negative = Complement
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What parts of the demand and supply curve is elastic and inelastic?
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Demand: -Upper Portion = Elastic -Lower Portion = Inelastic Supply: -Upper Portion = Inelastic -Lower Portion = Elastic
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Price Elasticity of Supply Formula
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((% Change in Qsupplied) / (% Change in Price))
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True or False: Price Elasticity of Supply is more elastic in the long-run
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True
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Which is more elastic? : Beethoven recordings or classical music recordings
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Beethoven - Narrower Market
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Group of buyers and sellers of a particular product
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Market
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One with many buyers and sellers, each has a negligible effect on price
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Competitive Market
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-All goods exactly the same -No one can affect market price - each is "price taker"
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Perfectly Competitive Market
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Amount of good buyers are willing and able to purchase.
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Quantity Demanded
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Claim that the quantity demanded of a good falls when the price of the good rise , other things equal (downward sloping)
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Law of Demand
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Table that shows the relationship between price of a good and Qdemanded.
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Demand Schedule
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Sum of the quantities demanded by all buyers at each price.
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Market Demand
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Amount seller is willing and able to sell.
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Quantity Supplied
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Quantity supplied rises when price of good rises (Upward Sloping)
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Law of Supply
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Table showing the relationship between price of good and quantity supplied
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Supply Schedule
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Sum of quantity supplied by all sellers at each price.
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Market Supply
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Numerical measure of the responsiveness of Quantity demanded or Quantity Supplied to one of its determinants
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Elasticity
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% Change Formula
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((End Value - Start Value) / (Start Value)) * 100
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Price Elasticity is higher when...
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-Close Substitutes are available -Narrowly defined goods -Luxuries -Demand Curve is flatter
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-Extent to which close subs are available -Necessity or luxury -Broad or narrow -Long Run vs. Short Run
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Determinants of price elasticity
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-Greater than 1 - % Change in Quantity > % Change in Price
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Elastic
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-Less than 1 -% Change in Quantity < % Change in Price
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Inelastic
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-How easy sellers can change Quantity Produced -Short run vs. long run (Greater in long run)
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Determinants of Supply Elasticity
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True or False: An increase in the demand for notebooks raises the quantity of notebooks demanded but not the quantity supplied.
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False
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True or False: When the demand curve and the supply curve shift in the direction previously indicated, the effect on the equilibrium price is clear even without knowing the magnitude of the shifts.
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False
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A legal max on the price of a good or service.
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Price Ceiling
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A legal minimum on price of good or service.
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Price Floor
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True or False: With binding constraint, supply and demand are more price-elastic. Therefore, the shortage is larger.
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True
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This will cause a surplus in labor (unemployment). This illegal.
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Price Floor Binding
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The ability of firms to enter and exit a market over time means that, in the long run,
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The supply curve is more elastic
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A price change causes the quantity demanded of a good to decrease by 30%, while the total revenue of that good increases by 15%. True or False: The demand curve is elastic in this region.
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False
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A price ceiling below eq price is binding or not binding?
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Binding
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True or False: If the price is above the max willingness to pay then, he/she will not purchase it (zero consumer surplus)
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True
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Studies how the allocation of resources affects economic well-being.
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Welfare Economics
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Max amount buyer will pay for good. Measures how much the buyer values the good.
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Willingness to Pay (WTP)
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The buyer who would leave the market if price were any higher.
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Marginal buyer
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Amount a buyer is willing to pay minus the amount buyer actually pays.
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Consumer Surplus
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Value of everything a seller must give up to produce a good (i.e. opportunity cost).
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Cost
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The seller who would leave the market if price were any lower.
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Marginal Seller
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The amount a seller is paid for a good minus the seller's cost.
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Producer Surplus
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Total Surplus Formula
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Value to buyers - Cost to seller CS + PS
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Allocation of resources is efficient if...
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Total Surplus is Maximized
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Goods are consumed by buyers who value them most highly. Goods are produced by producers with lowest costs. Raising or lowering quantity of good would not increase total surplus.
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Efficiency
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When a good is taxed, the burden of the tax falls mainly on consumers if
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supply is elastic, and demand is inelastic.
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True or False: Price ceiling set above equilibrium (non-binding) will effect equilibrium price and quantity.
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False
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If the government places a $500 tax on luxury cars, the price paid by consumers will rise by...
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Less than $500
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True or False: The size of the effect on employment depends only on the elasticity of demand.
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True
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True or False: The size of the effect on unemployment depends on the elasticity of demand and the elasticity of supply.
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True
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Producing a quantity larger than the equilibrium of supply and demand is inefficient because the marginal buyer's willingness to pay is...
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positive but less than the marginal seller's cost.
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