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ECON 103 Midterm: Econ103 Midterm 1 Solutions

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turquoisegnu128
31 Jan 2019
School
University of Victoria
Department
Economics
Course
ECON 103
Professor
All

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Document Summary

Unless told otherwise, assume throughout that demand curves slope downwards and supply curves slope upwards: suppose that you are indifferent between seeing a seeing a move or going to a concert on a particular saturday evening. You are willing to pay to see the movie and the movie ticket costs . You are willing to pay for the concert. The opportunity cost of an action is equal to the explicit costs of that action plus the implicit costs of that action. t. To calculate accurately the opportunity cost of an action we need to first identify the next best alternative to that action. t. Dr. emma hutchinson: ziming (a uvic student) has bought a plane ticket home for christmas, leaving. He was willing to pay of the plane ticket, and the ticket cost . Ziming can change the date of the ight by incurring a fee.

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Related Questions

True or False.

1) If two people spend the same amount of money for a day at Disneyland (pay the same price for admission, pay the same amount for parking, etc.), then they have the same opportunity cost of spending a day at Disneyland.

2) All else equal, a consumer would prefer to have her income doubled rather than have a 50% reduction in the price she pays for every good.

3) In the area where you live, the price of a concert ticket is three times the price of a movie ticket. Your cousin lives in another country, in which the price of a concert ticket is two times the price of a movie ticket. If you and your cousin are both utility-maximizing consumers of concerts and movies, your MRS of concerts for movies will be lower than your cousin's MRS of concerts for movies.

4) When food costs $10 per unit and clothing costs $20 per unit, an individual chose to consume 7 units of food and 4 units of clothing per month. When the price of clothing falls to $15 per unit, that individual now chooses to consume 6 units of food and 6 units of clothing per month. Because their consumption of one good has increased and their consumption of the other good has decreased, this individual's utility could be either higher or lower than it was before the price decreased.


Economics is the study of

A. production methods.

B. how society manages its scarce resources.

C. how households decide who performs which tasks.

D. the interaction of business and government.

Point Value: 1

2
When computing the opportunity cost of attending a concert you should include

A. the price you pay for the ticket and the value of your time.

B. the price you pay for the ticket, but not the value of your time.

C. the value of your time, but not the price you pay for the ticket.

D. neither the price of the ticket nor the value of your time.

Point Value: 1


You are considering staying in college another semester so that you can complete a major in economics.? In deciding whether or not to stay you should

A. compare the total cost of your education to the total benefits of your education.

B. compare the total cost of your education to the benefits of staying one more semester.

C. compare the cost of staying one more semester to the benefits of staying one more semester.

D. compare the total benefits of your education to the cost of staying one more semester.

Point Value: 1


Trade between countries tends to

A. reduce both competition and specialization.

B. reduce competition and increase specialization.

C. increase competition and reduce specialization.

D. increase both competition and specialization.

Point Value: 1


5- The "invisible hand" directs economic activity through

A. advertising.

B. prices.

C. central planning.

D. government regulations.

Point Value: 1


6- One reason we need government, even in a market economy, is that

A. there is insufficient market power in the absence of government.

B. property rights are too strong in the absence of government.

C. the invisible hand is not perfect.

D. Both a and b are correct.

Point Value: 1

7.This question has not been answered completely
The government enforces property rights by

A. requiring property owners to pay property taxes.

B. providing police and courts.

C. forcing people to own property.

D. providing public parks and recreation facilities.

Point Value: 1

8.This question has not been answered completely
Causes of market failure include

A. externalities and market power.

B. market power and incorrect forecasts of consumer demand.

C. externalities and foreign competition.

D. incorrect forecasts of consumer demand and foreign competition.

Point Value: 1

9.This question has not been answered completely
Market power refers to the

A. power of a single person or small group to influence market prices.

B. ability of a person or small group to successfully market new products.

C. power of the government to regulate a market.

D. importance of a certain market in relation to the overall economy.

Point Value: 1

10.This question has not been answered completely
Large or persistent inflation is almost always caused by

A. excessive government spending.

B. excessive growth in the quantity of money.

C. foreign competition.

D. higher-than-normal levels of productivity.

Salvatore Chapter 1:

Discussion Questions: 9. How is the concept of a normal return on investment related to the distinction between business and economic profit?

Problems:

5. Determine which of the two investment projects a manager should choose if the discount rate of the firm is 10%. The first project promises a profit of $100,000 in each of the next 4 years, while the second project promises a profit of $75,000 in each of the next 6 years.

6. Determine which of the two investment projects of Problem 5 the manager should choose if the discount rate of the firm is 20%.

15. Integration Problem Samantha Roberts has a job as a pharmacist earning $30,000 per year, and she is deciding whether to take another job as the manager of another pharmacy for $40,000 per year or to purchase a pharmacy that generates a revenue of $200,000per year. To purchase the pharmacy, Samantha would have to use her $20,000 savings and borrow another $80,000 at an interest rate of 10% per year. The pharmacy that Samantha is contemplating purchasing has additional expenses of $80,000 for supplies, $40,000 for hired help, $10,000 for rent, and $5,000 for utilities. Assume that income and business taxes are zero and that the repayment of the principle of the loan does not start before 3 years. (a) What would be the business and economic profit if Samantha purchased the pharmacy? Should Samantha purchase the pharmacy? (b) Suppose that Samantha expects that another pharmacy will open nearby at the end of 3 years and that this will drive the economic profit of the pharmacy to zero. What would the revenue of the pharmacy be in 3 years? (c) What theory of profit would account for profits being earned by the pharmacy during the first 3 years of operation? (d) Suppose that Samantha expects to sell the pharmacy at the end of 3 years for $50,000 more than the price she paid for it and that she requires a 15% return on her investment. Should she still purchase the pharmacy?

Spreadsheet Problem (see attached Excel doc)

Using the data below, (Excel doc) where column A represents student numbers, column B the finishing time for a 1 mile race for 10 students, and column C the age of the students, (a) Use the data analysis tools to plot a line graph of all the finishing times. (b) Calculate a mean, median, mode, sample variance, sample standard deviation, and coefficient of variation to statistically describe the data. (c) Use Excel to fine the covariance between the two variables. What does the covariance indicate about the relationship between finishing time and age?

Note:

P15(d): Change “… for $50,000 more than …” to “… for $50,000 less than …” Compare the present value of economic profit in each of the next three years and the loss of $50,000 in the third year using 15% as the discount rate.

The spreadsheet problem (b): Calculate a mean, …. to statistically describe the data of both variables, Time and Age.

Individual problems:

3-1 You won a free ticket to see a Bruce Springsteen concert (assume the ticket has no resale value). U2 has a concert the same knight, and this represents your next-best alternative activity. Tickets to the U2 concert cost $80, and on any particular day, you would be willing to pay up to $100 to see this band. Assume that there are no additional costs of seeing either show. Based on the information presented, what is the opportunity cost of seeing Bruce Springsteen?

3-3 Because of the housing bubble, many houses are now selling for much less than their selling price just 2 to 3 years ago. There is evidence that homeowners with virtually identical houses tend to ask for more is they paid more for the house. What fallacy are they making?

Salvatore Chapter 3:

Discussion Questions:

9. How would you react to a sales manager’s announcement that he or she has in place a marketing program to maximize sales?

Problems:

1(a). Given the following total-revenue function: TR= 9Q - Q^2

Derive the total-, average-, and marginal- revenue schedules from Q=0 to Q=6 by 1’s.

7. Given the total-cost schedule: Q 0 1 2 3 4

TC 1 12 14 15 20

Derive the average- and marginal-cost schedules.

9. With the total-revenue curve of Problem 1 and the total-cost curve of problem 7, derive the total-profit function and show how the firm determines the profit-maximizing level of output.

Note:

DQ9: Does maximum sales (revenue) equal maximum profit (see figure 3-4)?

Revised P1(a): Derive the total-revenue, average-revenue, and marginal-revenue schedules from Q = 0 to Q = 4 by 1s.

Average revenue (AR) = total revenue (TR)/Q

Marginal revenue (MR) = change in total revenue/change in Q

For example:

Q

TR

AR

MR

2

14

7 (=14/2)

3

18

6 (=18/3)

4 (=(18-14)/(3-2)

Revised P9: With the total-revenue schedule of Problem 1 and the total-cost schedule of Problem 7, show the profit-maximizing level of output (profit=TR-TC).

Froeb et al. Chapter 4:

Individual problems:

4-5 Your insurance firm processes claims through its newer, larger high-tech facility and its older, smaller low-tech facility. Each month, the high-tech facility handles 10,000 claims, incurs $100,000 in fixed costs and $100,000 in variable costs. Each month, the low-tech facility handles 2,000 claims, incurs $16,000 in fixed costs and $24,000 in variable costs. If you anticipate a decrease in the number of claims, where will you lay off workers?

4-6 A copier company wants to expand production. It currently has 20 workers who share eight copiers. Two months ago, the firm added two new copiers, and output increased by 100,000 pages per day. One month ago, they added five workers, and productivity also increased by 50,000 pages per day. Copiers cost about twice as much as workers. Would you recommend they hire another employee or buy another copier?