chapter 12 – Flashcards
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What conditions make a market perfectly​ competitive?
A market is perfectly competitive if
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it has many buyers and many​ sellers, all of whom are selling identical​ products, with no barriers to new firms entering the market.
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What are the three conditions for a market to be perfectly​ competitive?
For a market to be perfectly​ competitive, there must be
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many buyers and​ sellers, with all firms selling identical​ products, and no barriers to new firms entering the market.
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What is a price​ taker?
A price taker is
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a firm that is unable to affect the market price
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When are firms likely to be price​ takers?
A firm is likely to be a price taker when
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it sells a product that is exactly the same as every other firm
it represents a small fraction of the total market
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​"According to the model of perfectly competitive markets ​, the demand for wheat should be a horizontal line. But this​ can't be​ true: When the price of wheat​ rises, the quantity of wheat demanded​ falls, and when the price of wheat​ falls, the quantity of wheat demanded rises.​ Therefore, the demand for wheat is not a horizontal​ line."
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incorrect
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How are prices determined in perfectly competitive markets ​?
In perfectly competitive​ markets, prices are determined by
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the interaction of market demand and supply because firms and consumers are price takers.
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What characterizes perfectly competitive​ markets?
Perfectly competitive markets have
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no barriers to new firms entering
identical products sold by all firms
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A buyer or seller that is unable to affect the market price is called
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price taker
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How should firms in perfectly competitive markets decide how much to​ produce?
Perfectly competitive firms should produce the quantity where
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the difference between total revenue and total cost is as large as possible
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Explain why it is true that for a firm in a perfectly competitive market that P​ = MR​ = AR.
In a perfectly competitive​ market, P​ = MR​ = AR because
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firms can sell as much output as they want at the market price
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Which of the following statements is true when the difference between TR and TC is at its maximum positive​ value?
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Both A and B are true.
Slope of TR​ = Slope of TC
MR​ = MC
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Explain why it is true that for a firm in a perfectly competitive​ market, the​ profit-maximizing condition MR​ = MC is equivalent to the condition P​ = MC.
When maximizing​ profits, MR​ = MC is equivalent to P​ = MC because
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the marginal revenue curve for a perfectly competitive firm is the same as its demand curve.
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Suppose Farmer Lane grows and sells cotton in a perfectly competitive industry. The market price of cotton is ​$1.62 per​ kilogram, and his marginal cost of production is ​$1.56 per​ kilogram, which increases with output. Assume Farmer Lane is currently earning a profit.
Can Farmer Lane do anything to increase his profit in the short​ run?
Farmer Lane
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can increase his profit by producing more output.
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A firm producing good Y recently increased monthly production from​ 1,500 units to​ 2,000 units. This had no impact on the market price of good Y. At the new production level of​ 2,000 units, the​ firm's average cost is​ $3.5 while its marginal cost of production is​ $4. The marginal revenue however is fixed at​ $5 for all levels of output. Jake Williamson is the operations head of the firm. Jake feels​ that, since the firm has the​ capacity, it should have increased production further to​ 2,500 units which would have maximized profits. On the other​ hand, Mathew Hayden of the market research team anticipates an increase in price to​ $5.5 in the near future. He therefore claims that the firm may not be maximizing economic profit in the short run even at​ 2,500 units.
Which of the following is most strongly implied by this​ information?
Jake and Mathew will most likely agree on which of the​ following?
Mathew is assuming​ that:
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At the current level of​ production, the firm is making a profit of​ $3,000.
The firm should increase production from the current level.
no new firms enter the market in the short run.
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Which of the following is an expression of profit for a perfectly competitive​ firm?
Profit for a perfectly competitive firm can be expressed as
Which of the following is an expression of profit for a perfectly competitive​ firm?
Profit for a perfectly competitive firm can be expressed as
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B.
Profit= (pXq)-(TCxQ) where P is price and Q is output and TC is total cost
(P-ATC)xQ
Pis price Q is output ATC is avergae total cost
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A startup firm in a perfectly competitive market finds that its average total cost is higher than the market price. Since the firm is incurring​ short-run losses, the management is debating whether to continue operations. Alex​ Ferguson, a senior​ manager, feels that this is a temporary phase and the firm should continue operations.
Which of the​ following, if​ true, would support​ Alex's argument?
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The current price of the product covers the variable cost of production.
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What is the supply curve for a perfectly competitive firm in the short​ run?
The supply curve for a firm in a perfectly competitive market in the short run is
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that​ firm's marginal cost curve for prices at or above average variable cost.
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According to an article in the New York Times​, interest payments on bank loans make up more than half the costs of the typical solar panel manufacturer. The owner of a firm that imports solar panels made this observation about solar panel​ manufacturers:
​"So as long as companies can cover their variable costs and earn at least some revenue to put toward interest​ payments, they will continue to operate even at a​ loss."
​Source: Diane​ Cardwell, "Solar Tariffs​ Upheld, but May Not Help in​ U.S.," New York Times​, November​ 7, 2012.
The interest payments these firms make are a
The quote describes logical behavior of solar panel firms in the
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fixed cost since they do not vary with output.
short run.
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Suppose you decide to open a copy store. You rent store space​ (signing a​ one-year lease), and you take out a loan at a local bank and use the money to purchase 10 copiers. Six months​ later, a large chain opens a copy store two blocks away from yours. As a​ result, the revenue you receive from your copy​ store, while sufficient to cover the wages of your employees and the costs of paper and​ utilities, doesn't cover all of your rent and the interest and repayment costs on the loan you took out to purchase the copiers.
Should you continue operating your​ business?
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Yes, because you are covering your variable costs.
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What determines entry and exit of firms in a perfectly competitive industry in the long​ run?
In a perfectly competitive industry in the long​ run
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new firms will enter if existing firms are making a profit and existing firms will exit if they are experiencing losses.
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When are firms likely to enter an​ industry? When are they likely to​ exit?
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Economic profits attract firms to enter an​ industry, and economic losses cause firms to exit an industry.
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Would a firm earning zero economic profit continue to​ produce, even in the long​ run?
In​ long-run competitive​ equilibrium, a firm earning zero economic profit
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will continue to produce because such profit corresponds with positive accounting profit.
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A student in a principles of economics course makes the following​ remark:
​"The economic model of perfectly competitive markets is fine in theory but not very realistic. It predicts that in the long​ run, a firm in a perfectly competitive market will earn no profits. No firm in the real world would stay in business if it earned zero​ profits."
Is this remark correct or​ incorrect?
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The remark is incorrect because the student has confused accounting profit and economic profit. Firms in a perfectly competitive market earn accounting​ profit, but no economic profit.
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In July​ 2011, National Public Radio ran a story about the new gold rush. It​ reported:
The price of gold in the international market is steadily​ rising: more than fivefold in the past decade alone.​ It's currently selling for about​ $1,500 an​ ounce, paving the way for a new gold rush. Ten old mines have reopened in remote mountain and desert areas of the American West over the past decade.
​Sources: Ruxandra​ Guidi, "Mining Companies on Quest to Cash in on​ Gold," National Public​ Radio, July​ 7, 2011; Jeanne​ Baron, "Gold Fever Draws African Farmers from​ Fields," National Public​ Radio, July​ 2, 2011;​ "China Mining​ Company, Zijin Mining Group to Expand Gold Mines Exploration in ​Australia,"Mining Exploration​ News, August​ 2, 2011; and​ "Sixteen New Firms to Prospect for Gold in​ Turkey's Kaz​ Mountains," Hurriyet Daily​ News, August​ 22, 2011.
The new gold rush is not just in​ America,. It is in​ Australia, Africa,​ Asia, and elsewhere. So many firms around the globe are now mining for gold because
The story describes a new gold rush. Why​ hadn't all the gold already been​ discovered?
For a given demand for​ gold, over time the entry of all these firms into gold mining will
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the increase in price of gold has provided incentive for new firms to enter the industry and earn economic profit.
Until​ recently, the mining technology was such that gold mining was difficult and expensive.
lower the price of gold and decrease the economic profits from gold mining.
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Does the market system result in allocative​ efficiency?
In the long​ run, perfect competition
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results in allocative efficiency because firms produce where price equals marginal cost.
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Assume the market for oranges is perfectly competitive. If the demand for oranges​ increases, will the market supply additional​ oranges?
If the demand for oranges​ increases, then the market
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will supply additional oranges because producers seek the highest return on their investments.
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Does the market system result in productive​ efficiency?
In the long​ run, perfect competition
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results in productive efficiency because firms enter and exit until they break even where price equals minimum average cost.