EC120 Lecture Notes - Lecture 6: Eurocopter Ec120 Colibri, Utility, Marginal Cost

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14 Feb 2018

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Ec 120- lecture 6: basis of consumer behaviour. Utility is a conceptual measure of consumer satisfaction or value. Assume that consumers make choices to maximize utility. Assess utility based on observed consumer choices: circular nature of the argument is important, consumers are assumed to value those things they choose to consume. Key concept in utility theory- consumers derive less value from successive units of a particular type of consumption. You value your first coffee of the day more than your second. Each additional coffee adds some utility, but less than the previous one. Focus on incremental changes- ie. consuming one more or one fewer of a particular product. The consumption decision- do i buy another cup of coffee. Benefit is the marginal utility of the next unit purchased. What is the marginal utility of my next best purchase option. Individual demand curves derived from utility maximization: marginal utility is declining, as price increases, number of units purchased falls.

Related Questions

1. Economists use ____________ as a measure of the relative level of satisfaction when someone consumes a good or service.

2. Sue likes brownies. However, Sue notices that the more brownies she eats the less satisfaction she receives from each extra brownie. We can say that Sue is experiencing ___________________ from each extra brownie.

sugar sickness

total utility

diminishing marginal utility

increasing marginal utility

3. When total utility is maximized, the marginal utility will be

4. Consider Dirk and Lee. They are both eating pizza. Which of the following statements is true regarding their satisfaction and utility?

Dirk and Lee both receive 10 utils from eating pizza.

Dirk and Lee both receive the same level of satisfaction from eating pizza.

Dirk gets more twice as much satisfaction as Lee from eating pizza.

It is difficult to determine because the utility is subjective.

5. For many products, the total utility curve is

strictly increasing because of increasing marginal utility.

strictly decreasing because of diminishing marginal utility.

increasing initially because of increasing marginal utility, but eventually decreases.

increasing initially at a decreasing rate because of diminishing marginal utility but eventually decreases.

6. When consumers get the biggest bang for the buck, we say they

used the loudest gun in hunting season.

reached a consumer optimum.

minimized consumer satisfaction.

maximized marginal utility.

7. By choosing to consume at the consumer optimum, consumers will

maximize their total utility.

minimize their total utility.

maximize the amount they spend on each good.

minimize the amount they spend on each good.

8. A consumer is in equilibrium when consuming two goods when which of the following holds?

MU_a/ P_a = MU_b/ P_b

MU_a/ P_h =MU_b/ P_a

P_a/ MU_a = P_b/ MU_b

MU_a x P_a = MU_bxP_b

9. If the marginal utility of good 1 is 15 and its price is $3, and the marginal utility of good 2 is 12, and its price is $4, then the consumer

has achieved a consumer optimum.

should increase his or her consumption of good 1.

should increase his or her consumption of good 2.

should decrease his or her consumption of good 1.

10.Suppose the price of an iPod decrease and the price of HD TVs remains the same; what noticeable effect(s) occur(s)?

the substitution effect only

the real-income effect only

the substitution effect and real-income effect, if there is a noticeable change in purchasing power

the substitution effect and real-income effect, if there isnât a noticeable change in purchasing power

11. The ______________ paradox was described by Adam Smith in 1776.

12. What is the key to solving the diamond-water paradox?

more water and fewer diamonds

marginal utility

total utility

consumer demand

13. When solving the diamond-water paradox we notice that the marginal utility of

diamonds are equal to the marginal utility of water.

diamonds are greater than the marginal utility of water.

diamonds are less than the marginal utility of water.

water is equal to its price, and therefore lower than the marginal utility of diamonds.

14. The consumer surplus for water is

greater than that for diamonds because water is nonessential.

greater than that for diamonds because water is essential.

less than that for diamonds because water is nonessential.

less than that for diamonds because water is essential.

15. Suppose a consumer consumes only diamonds and water, and the price of diamonds increases. All else being equal, a consumerâs marginal utility for diamonds

decreases and the marginal utility for water stays the same.

increases and the marginal utility for water decreases.

decreases and the marginal utility for water increases.

increases and the marginal utility for water stays the same.

tansnake161

1. Use the table below for the following question. Suppose you have a budget of $6 and that brownies and Twizzlers cost $1 each. What is the consumer optimum?

Number of Brownies	Total Utility of Brownies	Marginal Utility of Brownies	Number of Twizzlers	Total Utility of Twizzlers	Marginal Utility of Twizzlers
0	0	-	0	0	-
1	10	10	1	6	8
2	19	9	2	13	7
3	26	7	3	19	6
4	30	4	4	23	4
5	30	0	5	25	2
6	29	-1	6	25	0

6 brownies

3 brownies and 3 Twizzlers

4 brownies and 2 Twizzlers

any combination of 6 because they're both $1

2. Use the table below for the following question. What is the consumer equilibrium for a $6 budget if the price of brownies rises to $1.50 and the price of Twizzlers remains at $1.00?

Number of Brownies	Total Utility of Brownies	Marginal Utility of Brownies	Number of Twizzlers	Total Utility of Twizzlers	Marginal Utility of Twizzlers
0	0	-	0	0	-
1	10	10	1	6	8
2	19	9	2	13	7
3	26	7	3	19	6
4	30	4	4	23	4
5	30	0	5	25	2
6	29	-1	6	25	0

The consumer will buy all Twizzlers because they're cheaper.

4 brownies

3 Twizzlers and 2 brownies

3 brownies and 3 Twizzlers

3. At Nice Price for the Ice, an ice cream parlor, customers routinely buy a scoop of ice cream for $3. If consumers purchase one scoop of ice cream at $3, then why don't they keep buying more and more scoops for $3 until the store sells out?

People would not want more than one scoop of ice cream because then they would have less money to spend on other goods.

People do not want to consume all the scoops of ice cream because their total utility is higher the less they eat.

At some point, customers do not value an additional scoop at $3, so they will not pay $3 for a scoop after they reach that point.

4. Suppose you plan on eating 50 potato chips. As you start consuming potato chips, your marginal utility is very high, but it begins to fall slowly until you've eaten 10 chips. After you have eaten 10 chips, your marginal utility decreases even faster with each additional chip. The marginal utility continues to decline until you've eaten 49 chips. The fiftieth chip does not give you any additional utility. After 50 chips, your mouth gets so salty that it's unpleasant to eat anymore, so marginal utility is actually negative for those chips. How many chips should you eat in order to maximize your total utility?

5. As you start consuming potato chips, your marginal utility is very high, but it begins to fall slowly until you've eaten 10 chips. After you have eaten 10 chips, marginal utility decreases even faster with each additional chip. The marginal utility continues to decline until you've eaten 49 chips. The fiftieth chip does not give you any additional utility. After 50 chips, your mouth gets so salty that it's unpleasant to eat anymore, so marginal utility is actually negative for those chips. How many chips should you eat in order to maximize your marginal utility?

6. At current levels of consumption, Alice is spending her entire budget. If Alice gets 3 utils of satisfaction per dollar spent on ice cream and 2 utils per dollar spent on shampoo, then how should she adjust her consumption to get closer to the consumer optimum?

She is already at the consumer optimum, so no adjustment is necessary.

She should buy more ice cream and less shampoo.

She should buy more shampoo and less ice cream.

She should buy more of both goods.

7. Suppose you are at a restaurant and your favorite dish costs $20. You can get your next-favorite dish for $17. If your next-favorite dish gives you 100 utils, how many additional utils do you need from your favorite dish to spend the extra $3?

17.65

117.65

8. The diamond water paradox is the observation that water is essential to life and inexpensive, while diamonds are not essential and are highly-priced. Which of the other pairs of goods exhibit a pricing structure similar to water and diamonds?

economy & luxury cars

rice & truffles (very expensive mushrooms)

paper clips & gasoline

paper & textbooks

9. Rice is a cheap staple food eaten several times a day by many people all over the world. In Trufflelandia, residents also eat expensive mushrooms known as truffles once every year as a birthday celebration. Rice keeps the people alive and truffles are not necessary for sustaining their lives. Why is rice so cheap and truffles so expensive?

Truffles taste better, so they are worth more money.

Rice is easy to cook, so people buy a lot of it. If people are going to buy so much, then it has to be cheap.

Truffles are more nutritious, and healthy food is always more expensive than unhealthy food.

People eat so much rice that an additional serving of rice has little marginal value, but the marginal value of another serving of truffles is very high.

oliverat570

""Please give answer with simple explaination""""Please give answer with simple explaination""""Please give answer with simple explaination""

1. In every society, choices must be made because resources are

a. Infinite, but economic want are finite

b. Finite, but economic wants are insatiable

c. Unlimited, but economic wants limited

d. Limited, and so are economic wants

2. Which question is an illustration of a microeconomic question

a. Is the quantity of wine purchased in one year dependent upon the price of wine?

b. Does government spending influence the total level of employment in the economy?

c. Is the purchasing power of the dollar higher or lower today than it was in 2000?

d. Is capitalism superior to socialism?

3. The purpose of the ceteris paribus assumption used in economic analysis is to :

a. Avoid making normative statements

b. A void the post hoc, ergo propter hoc fallacy

c. Make sure that all relevant factors are considered

d. Restrict the analysis to effect of a single economic factor

4. The profit motive is

a. Ineffective at producing consumer goods

b. Inherently beneficial to society if left alone to pursue its own self interests

c. Effective at producing goods when consumption is non-rival or non-excludable

d. Is often at odds with societies interests

5. In the system of central planning

a. There is repaid of the infrastructure

b. There is severe inflation in wholesale and retail prices

c. Economic growth leads to widespread unemployment among workers

d. The outputs of some industries become inputs for other industries

6. The market system communicates changes in supply and demand and elicits appropriate responses from businesses and resource suppliers. This is known as the:

a. Rationing function of prices

b. Guiding function of prices

c. Monetary function of prices

d. Circular flow of income

7. An increase in the quantity of automobiles supplied would be caused by which be caused by which of the following?

a. An increase in the demand for automobiles

b. A decrease in the demand for automobiles

c. Higher prices for steel

d. Higher prices for gasoline

8. All of the following would cause an increase in the demand for private airplanes at a given price, except a:

a. Decrease in interest rates

b. Increase in consumer incomes

c. Decrease in taxes on luxury goods

d. Decrease in the costs of constructing private airplanes

9. In modern economies of mass production,

a. Biological need motivates most consumption

b. The intrinsic value of goods and services motivates mass consumption

c. Affluence makes relative depravation meaningless

d. Invidious comparison motivates much of mass consumption

10. a more equal distribution of income in the United States would result in greater total consumer satisfaction. This statement is based on the concept that:

a. Income inequality is unfair

b. Income inequality is undemocratic

c. Income equality stimulates efficiency

d. Incomes are subject to diminishing marginal utility

11. While command systems suffer from incentive problems, market economies

a. Have no incentive problems

b. Suffer from incentive problems of their own

c. Tend to resolve all problems by their own dynamics

d. Have problems to the degree that there is government interference.

12. What economic concepts can be used to explain the reason that a new car purchased by a consumer and driven off a new car lot decrease in value almost immediately compared with the value of the same make and model of a car still on the new car lot?

a. Positive and negative externalities

b. Liability rules and lawsuits

c. The Coase theorem and moral hazard

d. Asymmetric information and adverse selection

13. Consider a situation where the U.S. Congress wants to place a special tax on private airplanes to increase tax revenue. This tax would only be effective in raising new tax revenues if the price elasticity of:

a. Supply is elastic

b. Supply is inelastic

c. Demand is elastic

d. Demand is inelastic

14. Under what circumstances would you expect economic profits to be zero in a particular industry?

a. During a recession

b. When there is little competition in the industry

c. When the industry is neither expanding nor contracting

d. When the demand for the product being produced is increasing

16. If economic resources are perfectly interchangeable between the two products shown on a production possibilities graph:

a. The economy will always be at full employment

b. More of one product can be produced without producing less fo the other product

c. The production possibilities curve would be straight line

d. The two products are of equal value to the economy

17. Opportunity cost is best defined as:

a. Marginal cost minis marginal benefit

b. The time spent on an economic activity

c. The value of the best foregone alternative

d. The money cost of an economic decision

18. All of the following would affect the position of a country production possibilities curve expect:

a. The quality of labor

b. The level of employment

c. The amount of the capital stock

d. Technological progress

19. The post hoc, ergo propter hoc fallacy consists of:

a. Using an example to a different point

b. Inferring causality from chronological sequence

c. Jumping to conclusions from an inadequate number of cases

d. Arguing for or against the person rather than the position being supported

20. Which is one of the five fundamental question that needs to be answered by economic system

a. What is the rate of unemployment?

b. Who will be the richest person in the economy?

c. What goods and services will be produced?

d. Why are the prices for goods and services so high?

21. The institution of private property is sustained over time by:

a. Competition

b. Bequests

c. Self-interest

d. Free enterprise

lilacmosquito322

EC120 Lecture Notes - Lecture 6: Eurocopter Ec120 Colibri, Utility, Marginal Cost

EC120 Full Course Notes

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