ECO 1302 Lecture Notes - Lecture 11: Marginal Revenue, Marginal Cost, Perfect Competition

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chocolaterat107

28 Mar 2018

School

St. John's University

Department

ECO - ECONOMICS

Course

ECO 1302

Professor

Mark Zi Long Li

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Document Summary

Gives us the growth in an economy. Also gives us the output per worker. Chapter 8- short run cost and output decisions. The quantity of each input in demand. Competitive market is one in which a large number of producers compete with each other to satisfy the wants and needs of a large number of consumers. In a competitive market no single producer, or group of producers, and no single consumer, or group of consumers, can dictate how the market operates. Total revenue- the total amount that a firm takes in from the sale of its product: the price per unit times the quantity of output the firm decides to produce (p x q) Marginal revenue- the additional revue that a firm takes in when it increases output by one additional unit. In perfect competition, the marginal revenue is equal to the price. The marginal revenue curve and the demand curve facing a competitive firm are identical.

Related Questions

1. In a market economy, the high salaries of some star baseball players such as Adrian Gonzalez, are determined by

		Team owners, based on the total number of star athletes they plan to hire.
	B	advertising companies, based on what they are willing to pay to advertise their products at baseball games.
	C	the interaction of the demand for star athletes and the supply of star athletes.
	D	consumers, based on their willingness to watch baseball games.

2. Demand in factor markets differs from demand in product markets in that

	A	the demand for a factor of production is difficult to determine.
B		the demand for a factor of production is influenced by workers' productivity and by the producers' expected sales revenues, not by tastes and preferences of consumers.
C		demand for a factor of production is based on the tastes and preferences of firms.
D		demand for a factor of production is based on the tastes and preferences of resource owners.

3. The demand for labor is described as a derived demand because

A		it is derived by workers seeking to earn income to fund the consumption of goods and services.
B		it is derived by producers seeking to make profits by starting new businesses.
C		it is derived from the demand for products that use labor in the production process.
D		it is derived from government institutions that rely on labor markets for the purpose of raising tax revenue.

4. Which of the following is not an example of a derived demand?

A		Several of the animated films released between 1999 and 2001 failed to earn a profit, which caused some companies to stop making these films, thereby decreasing the demand for animators.
B		Seth Bullock, a personal injury attorney, complains that he is earning far less now than a few years ago largely because personal injury cases have been undercut by state laws limiting class-action suits and payouts on damages.
C		Millicent Manning, the owner of a furniture store, is concerned that her sales have fallen for the past six months. She attributes this to the downturn in the real estate market.
D		As advancements in medical technology increase the safety and success of laser eye surgery, the demand for opticians has decreased.

5. Marginal revenue product for a perfectly competitive seller is equal to

A		the output price multiplied by the total product of labor.
B		the output price multiplied by the number of workers hired.
C		the change in total revenue that results from hiring another worker.
D		the marginal cost of production.

6. What is the difference between labor's marginal product and marginal revenue product?

A		The marginal product of labor is the increase in output as a result of hiring an additional worker while the marginal revenue product of labor is the increase in profit as a result of hiring an additional worker.
B		The marginal revenue product of labor is the dollar value of hiring an additional worker while the marginal product of labor is the increase in the firm's physical output as a result of hiring an additional worker.
C		The marginal product of labor is the additional labor's contribution to the firm's total output while the marginal revenue product is the additional labor's contribution to the firm's total sales revenue.
D		Labor's marginal product is a measure of labor's productivity while labor's marginal revenue product is a measure of labor's ability to sell the firm's products.

7. What is the difference between a firm's marginal revenue and its marginal revenue product?

A		Marginal revenue is the change in sales revenue from selling one more unit of output while marginal revenue product is the profit earned from hiring one more worker.
B		Marginal revenue is the change in sales revenue from selling one more unit of output while marginal revenue product is the change in total revenue from hiring one more worker.
C		Marginal revenue is the increase in revenue when a firm raises its output price while marginal revenue product is the increase in the marginal product when a firm hires an additional worker.
D		There is no difference between the two terms.

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1-7 True or False

1) In the short run, a perfectly competitive firm can earn positive, zero, or negative profit depending on the market price of the firm's output.

2)In the model of the perfectly competitive firm, the firm's fixed costs are equal to its implicit costs of production.

3)Assume the market price is greater than average total cost at the perfectly competitive firm's profit-maximizing level of output. In this case, the firm is earning positive economic profits, which act as an incentive for new firms to enter the market.

4)Assume that at the current level of output, price equals marginal revenue, but is less than average total cost. So long as price is greater than average variable cost, the firm should continue to operate in the short run to minimize its losses.

5)The fact that a firm is a price-setter does not ensure it will make a positive economic profit in the short run and over time.

6)Barriers to entry serve to limit the number of firms that operate in a particular market and, as 11) such, reduce the amount of total profit earned in the market.

7)In the prisoner's dilemma game, each player's dominant strategy is also the Nash equilibrium.

14-17 Multiple Choice

14) Marginal revenue is equal to:
A) the change in P x Q due to a one unit change in output. B) the change in quantity divided by the change in price.

C) the change in price divided by the change in output. D) price, but only if the firm is a price searcher.

15) In order to maximize its profits, a price-taking firm should produce the level of output at which:

A) marginal revenue = marginal cost. B) total revenue = total cost.

C) variable revenue = variable cost. D) average revenue = average cost.

16) Assume that there is an improvement in the technology used by firms in a perfectly competitive industry that is initially in long-run equilibrium. In the short run this would cause:

A) cannot be determined with the information given. B) no change in the firm's economic profit.
C) a decrease in the firm's economic profit. D) an increase in the firm's economic profit.

17) Assume at the firm's profit-maximizing level of output P = AVC. In this case, the firm will be:

A) incurring an economic loss. B) earning a positive economic profit.

C) earning economic profit = 0. D) breaking even.

1- All of the following statements apply to a purely competitive market in the long run, except:

A- In the long run, all inputs are variable in quantity.

B- Firms can expand their plant capacities in the long run.

C- Total fixed costs remain constant even when output expands in the long run.

D- Firms may enter or leave the industry in the long run.

2- Which of the following is true of normal profits?

A- They are necessary to keep a firm in the industry in the long run

B- They are zero under pure competition in the long run

C- They are excluded from a firm's costs of production

D- They are what attract other firms to enter an industry

3- -The long-run supply curve would be perfectly elastic when:

A- An increase in demand does not cause a change in product price

B- An increase in demand causes an increase in product price

C- A decrease in demand causes an increase in short-run supply

D- A decrease in demand causes an increase in product price

4- What happens in a decreasing-cost industry when some firms leave and the industry's output contracts?

A- The average cost will increase

B- The average cost will decrease

D- The total cost will decrease

C- The product price will decrease

5- Which of the following statements about a competitive firm is correct?

A-To maximize profits a competitive firm should produce at that output at which total revenue is greatest

B- In long-run equilibrium a competitive firm will produce at the point of minimum average costs

C- A competitive firm will produce in the short run so long as total receipts are sufficient to cover total fixed costs

D-A competitive firm will close down in the short run whenever price is less than the minimum attainable average total cost

6- When there is allocative efficiency in a purely competitive market for a product, the minimum price producers are willing to accept is:

A- Less than marginal benefit

B- Greater than marginal cost

C- Equal to the amount of efficiency or deadweight losses

D- Equal to the maximum price consumers are willing to pay

7- A patent is the legal right granted to a firm that allows it to:

A- Make copies of other firm's products

B- Be the sole buyer of a particular product or resource

C- Sell its new product exclusively for a set number of years

D- Be the exclusive distributor of a particular imported product

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ECO 1302 Lecture Notes - Lecture 11: Marginal Revenue, Marginal Cost, Perfect Competition

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