ECON 101 Lecture 3: Intro to Econ Beginning of Trade Lecture

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Econ 101 lecture 3 introduction to economics (second half of topic) and. In economics, there is no such thing as extreme decisions. Decisions are all made at the margin . This means that we make a decision based on the benefit that comes from consuming slightly more of a certain good or service versus the cost (the opportunity cost) of consuming said good or service. Decisions made at the margin occur all the time in everyday life. For example: should i prepare for my midterm for an extra hour or take a break for an hour. Decisions made at the margin are incremental adjustments to a certain plan of action. A benefit derived from a slight increase in a certain action is the marginal benefit. A consequence/opportunity cost from a slight increase in a certain action is the marginal cost.

Related Questions

Can you solve them and tell me if youre sure 100% 100% 100%

Question 1 (1 point)

If two variables move together but are otherwise unrelated, we have

Question 1 options:

a fallacy of composition.

an econometric model.

a spurious correlation.

an efficiency problem.

evidence of a weak correlation but strong causation.

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Question 2 (1 point)

The Latin expression "ceteris paribus": is essential in ______.

Question 2 options:

collecting data.

identifying sunk costs.

evaluating theories.

recognizing scarcity.

developing spurious relationships.

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Question 3 (1 point)

Opportunity cost is best defined as

Question 3 options:

marginal cost minus marginal benefit.

the time spent on an economic activity.

the value of the best forgone alternative.

the monetary cost of an economic decision.

marginal cost plus marginal benefit.

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Question 4 (1 point)

A cost that cannot be recovered at the time a decision is being made is termed a(n)

Question 4 options:

marginal cost.

scarcity cost.

sunk cost.

average cost.

opportunity cost.

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Question 5 (1 point)

If the marginal costs of 1, 2, and 3 hours of talking on the phone are $50, $75, and $105, then the total costs are

Question 5 options:

$50, $150, and $315.

$50, $41.67, and $115.

$50, 125, and $230.

$50, $175, and $405.

impossible to calculate with information given.

Save

Question 6 (1 point)

In general, individuals should specialize in producing those goods for which they

Question 6 options:

can produce more quickly than others.

can produce less quickly than others.

have the lowest opportunity cost compared to others.

have the highest opportunity cost compared to others.

have an average opportunity cost.

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Question 7 (1 point)

The extra benefit that comes from an extra unit of activity is called the _________ of the activity.

Question 7 options:

benefit

marginal benefit

marginal cost

average benefit

reservation benefit

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Question 8 (1 point)

The marginal benefit of an activity is the

Question 8 options:

same as the total benefits of the activity.

total benefit divided by the level of the activity.

change in the activity divided by the change in benefits.

extra benefit associated with an extra unit of the activity.

total benefit divided by the change in the level of the activity.

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Question 9 (1 point)

The fundamental problem that is studied in economics is that

Question 9 options:

consumers have limited wants in the face of unlimited resources.

markets should function without government interference.

Canada is too wealthy.

consumers have unlimited wants in the face of limited resources.

there are unlimited resources.

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Question 10 (1 point)

The range of topics, or issues, that fit within the definition of economics is

Question 10 options:

limited to market activities, e.g., buying soap.

limited to individuals and firms.

extremely wide, requiring only the ideas of choice and scarcity.

limited to governments and nations.

very limited.

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Question 11 (1 point)

When economists make predictions using the framework of a given economic model, it is usually based on

Question 11 options:

personal experiences.

important relationships between particular variables.

mathematical abstractions.

political implications.

the profit-maximizing objective.

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Question 12 (1 point)

The cost of spending an evening partying instead of studying economics is

Question 12 options:

the resulting decrease in the test score in Economics.

the time spent at the party.

the score of the test.

the cost of the textbook.

university tuition.

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Question 13 (1 point)

As one progresses from a one-person economy to a large, multi-person economy, the shape of production possibilities curve changes from

Question 13 options:

downward sloping to upwards sloping.

linear to convex (bowed into the origin).

concave (bowed out from the origin) to linear.

convex (bowed into the origin) to concave (bowed out from the origin).

linear to concave (bowed out from the origin).

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Question 14 (1 point)

Which is NOT a sunk cost?

Question 14 options:

Monthly rent of $1,000 contractually specified in a one-year lease.

An insurance premium of $50 per year, paid last month.

An attorney's retainer of $50,000 per year.

A worker's wage of $15 per hour.

A non-refundable deposit for a tender.

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Question 15 (1 point)

"We should support government intervention because the market produces undesirable outcomes" is an example of

Question 15 options:

positive economics.

normative economics.

comparative economics.

negative economics.

formative economics.

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1. The marginal product of labor is:

A. equal to the demand for labor.

B. the payment made to workers for their contribution to the output they produce.

C. the change in a firm's revenue as a result of hiring one more worker.

D. the additional output a firm produces as a result of hiring one more worker.

2. What does the phrase "internalizing an external cost" mean?

A. limiting the extent to which domestic firms can outsource production

B. prohibiting economic activities that create externalities

C. finding a way to address cross-border pollution

D. forcing producers to factor into their production costs the cost of the externalities created in the production of their output

3. The highest-valued alternative that must be given up to engage in an activity is the definition of

A. implicit cost

B. opportunity cost.

C. utility.

D. economic sacrifice.

4. What is market failure?

A. It refers to the inability of the market to allocate resources efficiently up to the point where marginal social benefit equals marginal private cost.

B. It refers to a situation where an entire sector of the economy (for example, the airline industry) collapses because of some unforeseen event.

C. It refers to a breakdown in a market economy because of widespread corruption in government.

D. It refers to the inability of the market to allocate resources efficiently up to the point where marginal social benefit equals marginal social cost.

5. Suppose a competitive firm is paying a wage of $12 an hour and sells its product at $3 per unit. Assume that labor is the only input. If the last worker hired increases output by three units per hour, then to maximize profits the firm should

A. lay off some of its workers.

B. does not change the number of workers it currently hires.

C. hire additional workers.

D. There is not enough information to answer the question.

6. When the price of summer tank tops falls and you buy more of them because they are relatively less expensive, this is called

A. the deadweight loss effect.

B. the income effect.

C. the substitution effect.

D. the elasticity effect.

7. An externality is

A. a benefit realized by the purchaser of a good or service.

B. a benefit or cost experienced by someone who is not a producer or consumer of a good or service.

C. a cost paid for by the producer of a good or service.

D. anything that is external or not relevant to the production of a good or service.

8. Firms pay famous individuals to endorse their products because

A. apparently demand is affected not just by the number of people who use a product but also by the type of person that uses the product. '

B. famous people only consume high-quality products.

C. famous people obviously know what are the best goods and services.

D. the firms are irrational and are wasting advertising expenditures.

9. If a consumer receives 20 units of utility from consuming two candy bars, and 25 units of utility from consuming three candy bars, the marginal utility of the second candy bar is

A. 25 utility units.

B. 20 utility units.

C. 5 utility units.

D. unknown as more information is needed to determine the answer.

10. When there is a negative externality, the private cost of production ________ the social cost of production.

A. is less than

B. is greater than

C. eliminates

D. is equal to

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4. Decisions made âat the marginâ entail a choice based upon_____________ of a decision.

a. the additional benefits
b. the total costs
c. comparing the total benefits and costs
d. comparing the additional benefits and costs
5. 100 units of Good X are available but individuals desire 500units. ______________ will determine who attains Good X, and whodoes not.

a. A rationing device
b. Opportunity Cost
c. Utility
d. Natural Selection

6. Individuals will continue consuming so long as:

a. The price of a good continues to decrease
b. The marginal costs of consuming are outweighed by the marginalbenefits
c. The individual seeks additional utility
d. The individual is willing and able

8. If the cross-price elasticity of two goods is positive, thenthose two goods are
a. substitutes.
b. complements.
c. normal goods.
d. inferior goods.

11. The basic reason most supply curves are upward sloping isthat:

a. More firms are in the market, therefore more goods areproduced.
b. Because more quantity is being demanded, suppliers raise theprice.
c. Producers face higher opportunity costs when producing higherlevels of quantity, so they must receive a higher price.
d. Producers seek to maximize total revenue.

18. When the price of bubble gum is $0.60, the quantity demanded is500 packs per day. When the price falls to $0.50, the quantitydemanded increases to 900. The demand for gum would beconsidered:

a. inelastic.
b. elastic.
c. unit elastic.
d. perfectly inelastic.

20. Inefficient Production implies which of the following:

a. it is impossible to produce more of one good without producingless of another
b. there are too few resources
c. there are too many resources
d. it is possible to produce more of one good without producingless of another

21. Workers at a bicycle assembly plant currently make minimumwage. If the federal government increases the minimum wage by $1.00an hour it is likely that the

a. demand for bicycle assembly workers will increase.
b. supply of bicycles will shift to the right.
c. supply of bicycles will shift to the left.
d. firm must increase output to maintain profit levels.

24. Suppose at a price of $5 and at a price of $9, John purchases40 units of good X. Given this information, we know that Johnâsdemand for good X is
a. perfectly elastic at all prices.
b. inelastic at all prices.
c. unit elastic between the prices of $5 and $9.
d. perfectly elastic between the prices of $5 and $9.
e. perfectly inelastic between the prices of $5 and $9.

25. If the price of good A decreases by 10 percent and the quantitydemanded of good B decreases by 10 percent, this is evidence that Aand B are
a. substitute goods.
b. complement goods.
c. inferior goods.
d. normal goods.
e. not related.

6. For an individual to achieve consumer equilibrium when consumingtwo goods, A and B, the individual must satisfy the followingcondition:

a. TUA = TUB
b. TUA/PA = TUB/PB
c. MUA = MUB
d. MUA/PA = MUB/PB
e. MUA/PB = MUB/PA

7. Which of the following statements is correct regarding a firm'sdecision making?
a. The decision to shut down and the decision to exit are bothshort-run decisions.
b. The decision to shut down and the decision to exit are bothlong-run decisions.
c. The decision to shut down is a short-run decision, whereas thedecision to exit is a long-run decision.
d. The decision to exit is a short-run decision, whereas thedecision to shut down is a long-run decision.

Table 1

Output Total Cost
0 $20
1 $30
2 $41
3 $51
4 $65
5 $75
6 $84
7 $105

13. Refer to Table 1. The marginal cost of producing the fifth unitof output is
a. $55.00
b. $15.00
c. $9.00
d. $10.00

21. A perfectly competitive firm can produce its current level ofoutput at an average total cost of $10 and a marginal cost of $8.If the market price of the product is currently $8, what should thefirm do?

a. The firm should definitely shut down since average total costexceeds price.
b. The firm should shut down if average variable cost is $8 orgreater, but the firm should continue to produce the current levelof output if average variable cost is less than $8.
c. The firm should increase production in order to increaseprofit.
d. The firm should continue to produce, but it should decreaseproduction in order to increase profit.
24. In the long run all costs are variable. Thus, aprofit-maximizing firm may exit:

a. When Price < Average Total Cost
b. When Price > Average Total Cost
c. When Average Revenue > Average Fixed Cost
d. When Average Revenue > Marginal Cost

25. Marginal cost tells us the
a. value of all resources used in a production process.
b. marginal increment to profitability when price isconstant.
c. amount by which total cost rises when output is increased by oneunit.
d. amount by which output rises when labor is increased by oneunit.

26. For a perfectly competitive firm:
a. marginal revenue is equal to price.
b. price is equal to marginal cost at the output level thatmaximizes profit.
c. selling an additional unit of the good it produces increasestotal revenue by the price of the good.
d. a and b
e. a, b, and c

ECON 101 Lecture 3: Intro to Econ Beginning of Trade Lecture

ECON 101 Full Course Notes

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