EC120 Chapter Notes - Chapter 14: Average Cost, Marginal Revenue, Market Power

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The meaning of competition: competitive market: a market in which there are many buyers and sellers so that each has a. The revenue of a competitive firm: profit = total revenue total cost, the amount of output produced determines how much revenue is made. Doubling amount of product produced means doubling the revenue made: average revenue: total revenue divided by quantity sole. Equals the price of the good: marginal revenue: the change in total revenue from an additional unit sold. Profit maximization: profit maximizing quantity is found by comparing marginal revenue and marginal cost, as long as marginal revenue exceeds marginal cost increasing the quantity produced raises profit. If marginal revenue is greater than marginal cost, you should increase production of the product. Is marginal revenue is, less than marginal cost you should decrease production of the product. If marginal revenue is greater than marginal cost the firm should increase its output.

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1. A perfectly elastic demand function

Select one:

a. is characteristic of an individual firm operating in a perfectly competitive market.

b. shows that a consumer is willing to pay any amount for the product.

c. shows that the individual firm can increase sales by lowering the price of output.

d. has a marginal revenue that is always decreasing.

2. Your local farmer has many competitors and exists in a market structure known as perfect competition. This means that price is determined outside of the individual farmer's ability to charge a price higher than the going market for a bushel of wheat, hence the farmer is

Select one:

a. a price maker and can therefore charge different customers different prices.

b. a price taker and cannot affect the market price of wheat.

c. always able to price produce above the competition and earn a larger profit.

d. never able to determine any prices he charges for anything, such as soybeans

3. All of the following are true regarding perfectly competitive price determination EXCEPT

Select one:

a. the individual firm takes the market price as given.

b. the individual firm is known as a market price maker.

c. the individual firm's marginal revenue curve is horizontal at the market price.

d. the market price is determined by the interactions among all buyers (households) and firms.

redhornet79

Which of the following is not necessarily a characteristic of perfect competition? (Points: 1)

low prices
a large number of buyers and sellers
a homogeneous product
perfect information

2. In the short run, a perfectly competitive ball bearing manufacturer will continue to produce at a loss if (Points :1)
it is covering all of its variable cost plus part of its fixed cost

it is covering all of its fixed cost
variable cost is less than the fixed cost
fixed cost is zero

3. The golden rule of profit maximization states that any firm maximizes profit by producing where (Points :
marginal revenue equals marginal cost
demand is unit elastic, and total revenue is the greatest
price equals marginal revenue
price equals marginal cost

4. Which of the characteristics of perfect competition assures that economic profit will be zero in the long run? (Points: 1)
There are easy entry and exit in the market.
Each firm is a price taker.
Each firm has access to perfect information.
Each firm is small relative to the market.

5. A constant-cost industry is distinguished by the fact that(Points: 1)
firms' short-run average total costs are horizontal
firms' short-run marginal cost curves are horizontal
the long-run industry supply curve is perfectly elastic
the short-run industry supply curve is perfectly elastic

6. Commodity products are (Points: 1)
pasteurized
bland
perceived by consumers to be identical
made by one manufacturer

7. In a perfectly competitive industry we are likely to find(Points: 1)
firms producing a wide variety of products
barriers to entry
no profit possible in the short run
firms that do not advertise

8. Perfectly competitive firms are price takers because (Points :1)
all small firms must take the price set by the largest firm in the market
firms take the price that government determines is a "fair" price
each firm is small and goods are perfect substitutes for one another
free entry and exit in the short run creates a constant market price in the long run

9. In perfect competition, if one firm raises its price, (Points :1)
others will follow
that firm will increase its revenues
that firm will lose revenues because other firms will not follow
all consumers will be adversely affected

10. Suppose, at its present rate of output, a perfectly competitive firm's marginal revenue exceeds both its marginal cost and its average variable cost. To maximize profit, the firm should (Points: 1)
lower the price
raise the price
increase output
reduce output

tanpig844

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

EC120 Chapter Notes - Chapter 14: Average Cost, Marginal Revenue, Market Power

EC120 Full Course Notes

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