ECON 160 Lecture Notes - Lecture 4: Opportunity Cost, Comparative Advantage
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1
The following table shows the market demand schedule and supply schedule for notebooks.
Price ($/unit) |
Quantity Demanded (units) |
Quantity Supplied (units) |
1 |
20 |
4 |
2 |
16 |
6 |
3 |
14 |
10 |
4 |
12 |
12 |
5 |
10 |
14 |
6 |
7 |
17 |
7 |
4 |
20 |
8 |
2 |
22 |
9 |
1 |
25 |
Refer to the table above. Assume that the market for notebooks is in equilibrium.
1. Which of the following is likely to happen if there is an increase in the school enrollment rate, everything else remaining unchanged?
A. Both the equilibrium price and quantity of notebooks decrease.
B. The equilibrium price and quantity remain unchanged.
C. Both the equilibrium price and quantity of notebooks increase.
D. The equilibrium price increases, but the equilibrium quantity of notebooks decreases.
2. A shortage occurs in a market when:
A.price is lower than the equilibrium price.
B. price is higher than the equilibrium price.
C. supply exceeds demand.
D. the marginal utility of consumption is negligible.
3. A change in the quantity demanded of a good is:
A. the outcome of a change in income.
B. the outcome of a change in tastes and preferences.
C. represented by a shift to a new demand curve.
D. represented by a movement along the demand curve.
4. The following table shows the demand schedules of three consumers of wine. Assume that these three buyers constitute the entire market.
PRICE ($/Bottle) |
Sandra's Demand (Bottles) |
David's Demand (Bottles) |
Mary's Demand (Bottles) |
â$8 |
2 |
10 |
|
â$6 |
14 |
15 |
18 |
â$4 |
23 |
24 |
|
â$2 |
24 |
27 |
28 |
Refer to the table above. If the market price of wine is $8/bottle, and the market demand for wine is 19 bottles, David's consumption of wine is:
A. 12 bottles.
B. 9 bottles.
C. 4 bottles.
D. 7 bottles.
5. Which of the following factors will NOT cause a shift in the demand for a good?
A. A change in the number of consumers
B. A change in the market price of the good
C. A change in tastes and preferences
D. A change in consumer incomes
6. Are all markets perfectly competitive?
A. No, there are other market types where firms have considerable power to control the price.
B. Yes, any economic system with a market structure is by definition perfectly competitive.
C. No, there are also command and control markets that are run by a central government.
D. No, in other types of markets, sellers offer identical goods and simply accept the market price.
7. Assume that a seller in a perfectly competitive market charges more than the equilibrium price. It is likely that this seller will:
A. increase his profit.
B. lose only a few buyers.
C. increase his sales.
D. lose almost all of his buyers.
8. The willingness to pay for a commodity:
A. increases as the consumption of the commodity increases.
B. is always less than the market price of the commodity.
C. decreases as the consumption of the commodity increases.
D. is always greater than the market price of the commodity.
9. Which of the following is likely to lead to a right shift in the supply curve of cotton?
A. An increase in labor productivity due to training programs
B. A rise in labor costs due to wage demands by labor unions
C. An increase in the price of cotton
D. A decrease in the price of cotton
10. The buyers of a good will want to purchase it as long as their willingness to pay for the good is:
A. equal to zero.
B. greater than or equal to the price.
C. greater than zero.
D. less than the price.
Please no cursive or typed out
1. (65 points total).
a) (5 points) Fill in the Table below.
Number of workers | Units of output | MPN |
0 | 0 | |
1 | 20 | |
2 | 38 | |
3 | 53 | |
4 | 66 | |
5 | 77 | |
6 | 86 | |
7 | 93 |
b. (10 points) Define the marginal product of labor and explain how it relates to the production function (with N on horizontal axis and Y on vertical axis). What shape does a production function typically take and why? Does this production function take the 'typical' shape?
c)(5 points) Assume that you sell your output to Europe for a US price = $10. The exchange rate is this time is $1.07 per Euro. What is the price of your product in Euros? Please round to 2 decimal places.
d) (5 points) You can hire all the workers you want at $80 per worker. Along with the US price = $10, calculate the number of workers that you will hire and the associated profit in REAL terms (as we did in class, we 'assume away' all other costs of production). Please give me the marginal REAL profit of each worker hired and then add them up and that is the total profit in real terms.
e)(5 points) Inflation data in the US is weaker than the Fed would like and thus, expectations change such that the Fed is less likely to raise interest rates. As a result, the new and updated exchange rate is $1.23 per Euro. What has happened to the value of the US dollar and what is the new Euro price of your product, assuming that your American price stays at $10?
f).(5 points) Given the change in conditions you decide to raise the price of your product in US dollar terms so that the Euro price stays the same as it was before the change in the exchange rate (part c above). What is the new US dollar price? Please show all work.
g) (10 points) What has happened to the marginal revenue product (MRPN) for each worker (has it gone up or down?) and why given the change in price? Be sure to define what the marginal revenue product is and what it means in 'laypersons' terms.
h) (10 points) Given that the US$ price of your product has changed, explain how and why you would change your behavior. Please provide the intuition beginning your answer with... at the same level of labor input I am no longer ......... (please be as specific as possible). Again, explain in REAL terms, not nominal terms.
i. (5 points) Calculate the new level of profits in REAL terms given the change in condition including the change in the exchange rate, the change in the US $ price of your product. and the change in your behavior.
j)(5 points) The Fed has had its eye on inflation for a long time and have been disappointed in that inflation has been too low. Is the change in the value the dollar vs the Euro a welcome development for the Fed? Why or why not? Assume that these conditions changed in a similar way for many US firms.