ECON 2310 Chapter Notes - Chapter 3: Divisor, Marginal Utility, Marginal Cost

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Opportunity cost- the cost associated with forgoing the opportunity to employ a resource in its best alternative use. Net benefit- equals total benefit less total cost. Marginal units- the marginal units of an action choice x are the last units, where is the smallest amount you can add or subtract. Marginal cost of an activity- at an activity level of x units is equal to the extra cost incurred due to the marginal units. Marginal benefit of an action- at an activity level of x is equal to the extra benefit produced by the marginal units. Sunk cost- a cost that the decision maker has already incurred or is committed to pay. The relationship between marginal benefit and the total cost curve. When actions are finely divisible, the marginal benefit when choosing action x is equal to the slope of the total benefit curve at x. The relationship between marginal cost and the total cost curve.

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.

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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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amberchimpanzee966

1. When economists speak of "marginal," they mean
a. Opportunity.
b. Scarcity.
c. Incremental.
d. Unimportant.

2. Managers undertake an investment only if
a. Marginal benefits of the investment are greater than zero.
b. Marginal costs of the investment are greater than marginal benefits of the investment.
c. Marginal benefits are greater than marginal costs.
d. Investment decisions do not depend on marginal analysis.

3. A firm produces 500 units per week. It hires 20 full-time workers (40 hours/week) at an hourly wage of $15. Raw materials are ordered weekly, and they cost $10 for every unit produced. The weekly cost of the rent payment for the factory is $2,250. How do the overall costs break down?
a. Total variable cost is $17,000; total fixed cost is $2,250; total cost is $19,250.
b. Total variable cost is $12,000; total fixed cost is $7,250; total cost is $19,250.
c. Total variable cost is $5,000; total fixed cost is $14,250; total cost is $19,250.
d. Total variable cost is $5,000; total fixed cost is $2,250; total cost is $7,250.

4. Total costs increase from $1,500 to $1,800 when a firm increases output from 40 to 50 units. Which of the following is true if marginal cost is constant?
a. FC = $100
b. FC = $200
c. FC = $300
d. FC = $400

5. A manager of a clothing firm is deciding whether to add another factory in addition to one already in production. The manager would compare
a. The total benefits gained from the two factories to the total costs of running the two factories.
b. The incremental benefit expected from the second factory to the total costs of running the two factories.
c. The incremental benefit expected from the second factory to the cost of the second factory.
d. The total benefits gained from the two factories to the incremental costs of running the two factories.

6. A firm is thinking of hiring an additional worker to their organization who they believe can increase total productivity by 100 units a week. The cost of hiring him or her is $1,500 per week. If the price of each unit is $12,
a. The MR of hiring the worker is $1,500.
b. The MC of hiring the worker is $1,200.
c. The firm should not hire the worker since MB < MC.
d. All the above

7. A retailer has to pay $9 per hour to hire 13 workers. If the retailer only needs to hire 12 workers, a wage rate of $7 per hour is sufficient.
What is the marginal cost of the 13th worker?
a. $117
b. $9
c. $33
d. $84

8. If a firm's average cost is rising, then
a. Marginal cost is less than average cost.
b. Marginal cost is rising.
c. Marginal cost is greater than average cost.
d. The firm is making an economic profit.

9. After the first week of his MBA Managerial Economics class, one of your pharmaceutical sales representatives accuses you of committing the sunk-cost fallacy by refusing to allow him to reduce price to make what he considers to be a really tough sale. Which of the following suggests the sales representative may be right?
a. Most of the costs of drug development are sunk, not fixed.
b. Sales representatives are paid a sales commission on revenue, so they don't care about the costs of drug development.
c. Sales representatives don't worry that a low price today may make it more difficult for the company's other sales representatives to charge higher prices to their customers, tomorrow.
d. Sales representatives think only about one thing, sales.

10. A company is producing 15,000 units. At this output level, marginal revenue is $22, and the marginal cost is $18. The firm sells each unit for $48 and average total cost is $40.
What can we conclude from this information?
a. The company is making a loss.
b. The company needs to cut production.
c. The company needs to increase production.
d. Not enough information is provided.

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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ECON 2310 Chapter Notes - Chapter 3: Divisor, Marginal Utility, Marginal Cost

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