Economics 2150A/B Lecture Notes - Lecture 7: Oligopoly, Statics, Comparative Statics

48 views7 pages

oliveshark818

3 Mar 2014

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

blackdeer406 and 39861 others unlocked

ECON 2150A/B Full Course Notes

Verified Note

9 documents

Document Summary

Homework 2: will be posted on tuesday, covers chapters 11 and part of 12, due next wed. feb. 5. Midterm: will cover chapters 9, 10, 11 and 12, no math problems from chapter 9, will be in class on monday feb. 10. Tr1 = area i + ii: to increase q sold to 5 million . Tr2 = ii + iii: mr = Q: change in tr = tr2 tr1 = area(iii + ii) area(ii + i) = area iii i, area ii = increase in tr from marginal units. Note that dp dq is negative because to decrease quantity, we have to decrease price. Your book doesn"t use derivatives, it uses: mr = p + q( P is the increase in tr from selling the marginal units. Q is the quantity you sold previously. This expression tells you it is the decrease in tr from the sale of existing units (inframarginal units) at a lower price.

Related Questions

1. Which of the following is true under a monopoly?

A. Monopolist chooses the highest possible price.
B. Monopolist chooses a price that is always higher than marginal cost of production.
C. Marginal revenue of a monopolist is price.
D. None of the above are true for monopoly.

2. You are the manager of a monopoly that faces a demand curve described by P = 230 -20Q. Your costs are C = 5 +30Q. The profit-maximizing output for your firm is:

A. 4
B. 5
C. 6
D. 7

3. Which of the following is true?

A. A monopolist produces on the inelastic portion of its demand.
B. A monopolist always earns an economic profit.
C. The more inelastic the demand, the closer marginal revenue is to price.
D. In the short run a monopoly will shutdown if P < AVC.

4. In a competitive industry with identical firms, long rum equilibrium is characterized by:

A. P = AC
B. P = MC
C. MR = MC
D. All of the above

5. You are the manager of a firm that sells its product in a competitive market at a price of $50. Your firm's cost function is C = 40 + 5Q². Your firm's maximum profits are:

A. 125
B. 250
C. 100
D. 85

6. A perfectly competitive firm faces:

A. A perfectly elastic demand function
B. A perfectly inelastic demand function
C. a demand function with unitary elasticity
D. none of the above

purpleworm770

1. A perfectly competitive firm will continue producing in the short run as long as it can cover its:

A.total cost.
B.average total cost.
C.average variable cost.
D.average fixed cost.

2. A perfectly competitive firm will earn a profit and will continue producing the profit-maximizing quantity of output in the short run if price is:

A.greater than marginal cost.
B.less than marginal cost.
C.less than average variable cost.
D.greater than average total cost.

3. Monopolistic competition is an industry characterized by:

A.a product with many close substitutes.
B.a horizontal demand curve.
C.a small number of firms.
D.barriers to entry and exit.

4. If a perfectly competitive firm increases production from 10 units to 11 units, and the market price is $20 per unit, total revenue for 10 units is:

A.$10.
B.$20
C.$200.
D.$210.

5. The demand curve facing a monopolist is:

A.horizontal, the same as that facing a perfectly competitive firm.
B.downward sloping, the same as that facing a perfectly competitive firm.
C.upward sloping, the same as that facing a perfectly competitive firm.
D.downward sloping, unlike the horizontal demand curve facing a perfectly competitive firm.

6. Suppose that a monopolist increases production from 10 units to 11 units. If the market price declines from $30 per unit to $29 per unit, marginal revenue for the eleventh unit is:

A.$1.
B.$9.
C.$19.
D.$29.

7. Most electric, gas, and water companies are examples of:

A.unregulated monopolies.
B.natural monopolies.
C.restricted-input monopolies.
D.sunk-cost monopolies.

8.If a perfectly competitive firm is producing a quantity that generates P > MC, then profit:

A.is maximized.
B.can be increased by increasing the price.
C.can be increased by decreasing the price.
D.can be increased by increasing production.

Multiple choice qs on Perfect Competition - Qs College level 1 MIcreconomics

1. What is the correct interpretation of the perfectly competitive firm's supply curve?

It is the same as its average variable cost curve.

It is the same as its total variable cost curve.

It is the same as the portion of its marginal cost curve that lies above the average variable cost curve.

It is the same as the portion of its average variable cost curve that lies above the marginal cost curve.

2. What is the name of the type of market that is dominated by a few firms?

Oligopoly.

Monopolistic competition.

Monopoly.

Perfect competition.

---------------------------------------------------

3. What is break-even output?

The output at which the total revenue just covers a firm's total fixed cost.

The output at which the total revenue just covers a firm's total variable cost.

The output at which the total revenue just covers a firm's fixed and variable costs including normal profits.

The output at which the firm is making zero normal profits.

==================================================================

4. All of the following except one are considered to be the prerequisite elements for a market system to work effectively. Which is the exception?

Extensive specialization and trade.

Perfect competition.

Private ownership of productive resources.

A legal and social foundation

A balanced government budget

==========================================================

5. What is the term for the price at which the firm makes only normal profits?

Shutdown price.

Break-even price.

Average price.

Economic price.

================================================

6. Which of the following statements is true regarding the price in a perfectly competitive market?

Price equals average revenue but not marginal revenue.

Price equals marginal revenue but not average revenue.

Price is equal to neither the average nor the marginal revenue.

Price is equal to both the average and marginal revenue.

=================================================

7. What is the term for the extra revenue derived from the sale of one more unit?

Average revenue.

Marginal revenue.

Net revenue.

Total revenue.

=========================

8. What is the term for the amount of revenue that will always equal the price of the product in a perfectly-competitive market?

Marginal price.

Net revenue.

Average revenue.

Total revenue.

Economics 2150A/B Lecture Notes - Lecture 7: Oligopoly, Statics, Comparative Statics

ECON 2150A/B Full Course Notes

Document Summary

Get access

Related Documents

Economics 2150A/B Lecture Notes - Lecture 8: Ontario Power Generation, Marginal Revenue Productivity Theory Of Wages, Mangalore Refinery And Petrochemicals Limited

Economics 2150A/B Lecture Notes - Lecture 12: Form 10-Q, Best Response, Fast Food

Economics 2150A/B Lecture Notes - Lecture 16: Angus Cattle, Monopolistic Competition, Optometry

Related Questions