CAS EC 102 Lecture Notes - Lecture 4: Economic Equilibrium, Demand Curve, Statics

20 views3 pages

byzantiummanatee386

16 Mar 2016

School

Department

Course

Professor

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

crimsonantelope381 and 36670 others unlocked

CAS EC 102 Full Course Notes

Verified Note

6 documents

Document Summary

Which curve shits: demand since the price of a complement has changed and that is a determinant of demand. (ex: dvd sales - price goes lower for complement) Which way does it shit: it will shit to the right. (increase in demand, relected by right shit) What happens to equilibrium p and q ater the shit: draw the graph. (the equilibrium price and quanity both went up. , (p up, q up) Boston on sells for , ny sells for . However, everyone buys in boston so the price goes up. If program is efecive, should be lower quanity demanded. The equilibrium quanity went down. (p and q went down) When demand changes, and the demand curve shits, equilibrium and price move in the same direcion. (heroin market) supply curve didn"t shit. The only determinant of supply that changed was. Decrease in demand let shit the demand curve, which lowered the price, which was a movement along the line of supply.

Related Questions

Question 1 (1 point) Question 1 Unsaved In a competitive market the equilibrium price is determined: Question 1 options: at the intersection of the firmâs demand and the market supply curves. at the intersection of the market demand and supply curves. at the intersection of the firmâs demand and marginal cost curves. so as to cover the costs of the potential firms. so as to cover the costs of the firms currently in the industry. Save Question 2 (1 point) Question 2 Unsaved If the perfectly competitive market demand for gym shoes is given by QD = 100 â P and the market supply is given by QS = 10 + 2P, then the equilibrium price and quantity will be: Question 2 options: P = 50 and Q = 50. P = 40 and Q = 90. P = 40 and Q = 60. P = 30 and Q = 70. P = 25 and Q = 75. Save Question 3 (1 point) Question 3 Unsaved A constant-cost industry is one in which: Question 3 options: input prices do not change over time. technology does not change over time. input prices and technology do not change as firms enter or exit the industry. input prices and technology do not change over time. firms have reached the maturity phase of the industryâs life cycle. Save Question 4 (1 point) Question 4 Unsaved At the profit-maximizing level of output for the monopolist: Question 4 options: total revenue is equal to total cost. total costs are minimized. total revenue is maximized. marginal revenue is equal to marginal cost. average revenue is equal to average cost. Save Question 5 (1 point) Question 5 Unsaved Craigâs Red Sea Restaurant is the only restaurant in Columbia, South Carolina, that sells Ethiopian food. The demand for Ethiopian food is given by Q = 25 â P. Craigâs costs are given by TC = 25 + Q + 5Q2. Its maximum monopoly profit is: Question 5 options: â$1. $21. $22. $24. $26. Save Question 6 (1 point) Question 6 Unsaved So long as price exceeds average variable cost, in the model of monopolistic competition, a firm maximizes profits by producing where: Question 6 options: the difference between marginal revenue and marginal cost is maximized. marginal cost equals marginal revenue. marginal revenue equals price. the difference between price and marginal cost is maximized. price equals marginal cost. Save Question 7 (1 point) Question 7 Unsaved If a firm in a monopolistically competitive industry is profit maximizing, it should choose its level of advertising such that the marginal revenue of an additional dollar of advertising: Question 7 options: is equal to the elasticity of its demand curve minus 1. is exactly $1. increases revenues by $1. is equal to 1 plus the elasticity of its demand curve. is equal to the elasticity of its demand curve. Save Question 8 (1 point) Question 8 Unsaved Firms advertise in order to: Question 8 options: build brand loyalty. appeal to the price-sensitive consumers. increase the demand elasticities of their loyal customers. shift the market supply curve to the left. shift the market demand curve to the left. Save Question 9 (1 point) Question 9 Unsaved Firms offer promotions in order to: Question 9 options: build brand loyalty. appeal to the price-sensitive consumers. increase the demand elasticities of their loyal customers. shift the market supply curve to the left. shift the market demand curve to the left. Save Question 10 (1 point) Question 10 Unsaved If the demand increases for the product of a decreasing-cost industry: Question 10 options: short-run price goes up, but long-run price falls. long-run output goes up, but long-run price may go up or down. short-run output goes up, but long-run output may go up or down. long-run output goes up, but short-run price remains constant. long-run price goes up, but short-run price may go up or down. Save Question 11 (1 point) Question 11 Unsaved If the demand increases for the product of an increasing-cost industry: Question 11 options: short-run price goes up, but long-run price falls. long-run output goes up, but long-run price may go up or down. short-run output goes up, but long-run output may go up or down. long-run output goes up, but short-run price remains constant. short-run price goes up, and long-run price goes up. Save Question 12 (1 point) Question 12 Unsaved When Pan United Airlines gives a $400 fare discount to persons with student IDs, they are practicing: Question 12 options: first-degree price discrimination. second-degree price discrimination. third-degree price discrimination. markup pricing. tying. Save Question 13 (1 point) Question 13 Unsaved When a utility charges homeowners less than big industrial users, it is practicing: Question 13 options: first-degree price discrimination. fourth-degree price discrimination. third-degree price discrimination. markup pricing. tying. Save Question 14 (1 point) Question 14 Unsaved Cereal manufacturersâ use of coupons can be partially explained by: Question 14 options: first-degree price discrimination. second-degree price discrimination. third-degree price discrimination. markup pricing. tying. Save Question 15 (1 point) Question 15 Unsaved If a firm supplies separable markets with price elasticities h1 and h2, it should set prices P1 and P2 so that: Question 15 options: P1h1 = P2h2. P1 /h1 = P2 /h2. P1(1 + 1/h1) = P2 (1 + 1/h2). P1/(1 â 1 /h1) = P2 / (1 â 1/h2). P1 = 1 â 1/h1 and P2 = 1 â 1/h2. Save Question 16 (1 point) Question 16 Unsaved If a firm supplies separable markets with price elasticities h1 = â3 and h2 = â2, it should set prices P1 and P2 so that: Question 16 options: P1 = P2. 3P1 = 2P2. 2P1 = 3P2. 2/3P1 = 1/2P2. 2P1 = 2/3P2. Save Question 17 (1 point) Question 17 Unsaved Women are often charged more than men for haircuts performed by the same haircutter. This is not considered price discrimination because: Question 17 options: women receive more consumer surplus from haircuts than men receive. haircutters claim to spend more time on womenâs hair, raising the cost of the haircut to the firm. firms make up the extra cost to consumers by giving women free samples of products. men receive more consumer surplus from haircuts than women receive. women have a lower price elasticity of demand for haircuts. Save Question 18 (1 point) Question 18 Unsaved If price is above the average variable cost but below the average total cost of a representative firm in a competitive industry: Question 18 options: there will be entry to the industry over time. there will be exit from the industry over time. the firms in the industry are just earning a normal rate of return. the firms in the industry are earning a supranormal rate of return. the industry is in long-run equilibrium. Save Question 19 (1 point) Question 19 Unsaved Joeâs T-shirts has costs given by TC = $100 + 3Q, where Q is the number of shirts. If Joe charges $5 each, the percentage markup for 100 shirts is: Question 19 options: 20%. 25%. 33%. 50%. 67%. Save Question 20 (1 point) Question 20 Unsaved In the model of monopolistic competition, there can be short-run: Question 20 options: losses or profits, but there must be profits in long-run equilibrium. profits, but there must be losses in long-run equilibrium. losses or profits, but there must be losses in long-run equilibrium. losses or profits, but there must be neither profits nor losses in long-run equilibrium. losses, but there must be profits in long-run equilibrium.

Section I: Supply & Demand Analysis (Chapter 3) In each of the following 10 questions, show what happens to the Demand, Supply, equilibrium price and equilibrium quantity of copper. Show an increase by use of +, a decrease with a -, and no change with 0 (thatâs a zero, not an O or o). Although in the real world, both supply and demand are constantly changing, in the model we are using here, only one curve shifts per problem. So, if demand goes + or -, supply will be 0, and vice versa. In no case will equilibrium price or equilibrium quantity be 0. You may want to sketch out the supply and demand curve analysis to help in answering the questions. You will also be required to identify which determinant (of demand or supply) has changed, thus causing the shift. Rather than actually writing in the determinant, fill in the blank with the number that corresponds to the relevant determinant, based upon the following list. You may want to refer to the lecture notes entitled Determinants of Demand & Supply in the COURSE CONTENTS section. For questions 1 - 10, refer back to this list. Some you may want to use more than once, some you won't use at all. Copy and paste this list to an MS Word document and then print it out if you don't want to keep scrolling back and forth between this list and the question you're trying to answer. Determinants of Demand: 1. Change in buyer tastes 2. Change in number of buyers 3. Change in income 4. Change in the prices of related goods (on the demand side) 5. Change in consumer expectations Determinants of Supply: 6. Change in resource prices 7. Change in technology 8. Changes in taxes and subsidies 9. Change in prices of related goods (on the supply side) 10. Change in producer expectations 11. Change in the number of suppliers. For example, if a rightward shift in the supply curve for an item were caused by an increase in the number of producers of that item, you would indicate this be entering 11 into the relevant blank. If the demand curve shifted to the left because people didn't like that item anymore (like mimeograph machines), you'd enter 1 into the blank. Q#1 President Trump signs into law a bill that says the U.S. government will subsidize the construction of new homes, office buildings, bridges, and other infrastructure projects requiring copper. Demand; Supply: Equilibrium Price: Equilibrium Quantity Exchanged; Which determinant changed?: Q#2 Non-capitalist economies around the world begin a phase of rapid economic development, construction and growth, becoming increasingly wealthy, as they begin to adopt more capitalist institutions, as in China, Russia, and the former communist countries of East Europe. Demand; Supply: Equilibrium Price: Equilibrium Quantity Exchanged: Which determinant changed?

Q1. If the price of a complement increases, all else equal, ----------------------------

Q2. Which of the following would lead to an INCREASE in the demand for golf balls?

A) An decrease in the price of golf balls.

B) An increase in the price of golf clubs.

C) A decrease in the cost of producing golf balls.

D) An increase in average household income when golf balls are a normal good.

E) none of the above

Q3. If input prices increase, all else equal, --------------------------------

Q4. Which of the following would decrease the supply of wheat?

A) A decrease in the price of pesticides. B) An increase in the demand for wheat. C) A rise in the price of wheat. D) An increase in the price of corn. E) none of the above

Q5. When Sonoma Vineyards increases the price of its Chardonnay from $15 per bottle to $20 per bottle, the result is a decrease inâ¦

A) the quantity of this wine demanded B) the quantity of this wine supplied.

C) the demand for this wine. D) the supply of this wine.

Q6. Which of the following will cause a change in quantity supplied?

A) Technological change. B) A change in input prices. C) A change in the market price of the good.

D) A change in the number of firms in the market. E) all of the above.

Q7. In which of the following cases will the effect on equilibrium output be indeterminate (i.e., depend on the magnitudes of the shifts in supply and demand)?

A) Demand decreases and supply decreases. B) Demand remains constant and supply increases.

C) Demand decreases and supply increases. D) Demand increases and supply increases. E) none of the above.

Use the following demand and supply functions to answer the next three questions.

Demand: QD= 600 - 30P Supply: QS = -300 + 120P

Q8. Equilibrium price and output are

A) P = $2 and Q = 540. B) P = $10 and Q = 300. C) P = $6 and Q = 420.

D) P = $3.33 and Q = 500. E) none of the above

Q9. If the price is currently $8, there is a --------------------------

A) surplus of 360 units. B) shortage of 360 units. C) surplus of 300 units.

D) shortage of 660 units. E) none of the above

Q10. If the price is currently $4, there is a

A) shortage of 300 units. B) shortage of 480 units. C) surplus of 180 units.

D) shortage of 180 units. E) none of the above

Q.11 The Free Indeed Company manufactures ladiesâ shoes that are sold through discount houses. The shoes are sold for $20 each pair; the fixed costs are $110,000 for up to 30,000 pairs of shoes; variable costs are $13 per pair of shoes. What is the firmâs breakeven point in units sold?

a) 30,000 pairs of shoes b) 15,714 pairs of shoes c) 8,462 pairs of shoes d) 5,500 pairs of shoes

Q12. If the demand curve for British pounds shifts to the right, ---------------

a) the dollar price of British pounds will increase

b) the dollar price of British pounds will decrease

c) the exchange rate between dollars and pounds will be out of equilibrium

d) the pound will fall in value against the dollar

Q13. Judgments about "what ought to be" in economic matters. Can't be proven false, based on judgments

a. Macroeconomics b. Positive economics c. Normative economics d. Microeconomics

Q14. Which of the following statements is normative in nature?

A) That economics mid-term was tough!

B) Professor of economics put too many multiple-choice questions.

C) Neither of these statements is normative in nature

D) Both A & B of these statements are normative in nature

CAS EC 102 Lecture Notes - Lecture 4: Economic Equilibrium, Demand Curve, Statics

CAS EC 102 Full Course Notes

Document Summary

Get access

Related Documents

CAS EC 102 Study Guide - Midterm Guide: Aggregate Demand, Fiscal Policy, International Trade

CAS EC 102 Lecture Notes - Lecture 15: Aggregate Demand, Fiscal Policy, Monetary Policy

CAS EC 102 Lecture Notes - Lecture 19: Demand Curve, Aggregate Demand, Exchange Rate

Related Questions