ECON-2006EG Study Guide - Quiz Guide: Marginal Product, Demand Curve, Effective Demand

Considering the demand side of a market for a good, it is reasonable to expect that:
i. demand curves for a given good are identical between consumers
ii. demand curves for a given good differ between consumers
iii. an individual has identical demand curves for different goods
iv. an individual has different demand curves for different goods

Suppose the market demand curve for a good is represented by the linear equation Q = 60 - 0.75P. If the market price were to increase from P = $20 to P = $40, then holding all other factors constant:

A perfectly competitive firms supply curve for a good identifies the:
i. minimum quantity supplied at each price, holding all other factors constant
ii. firms minimum willingness to accept for each incremental unit of the good (e.g., the first unit, second unit, etc.), holding all other factors constant
iii. maximum quantity supplied at each price, holding all other factors constant
iv. firms maximum willingness to accept for each incremental unit of the good (e.g., the first unit, second unit, etc.), holding all other factors constant

Considering the supply side of a market for a good, if a firms supply curve were vertical, then:

The determinants of supply are:
i. factors other than price that will affect the quantity of a good or service a firm is willing and able to purchase
ii. factors that affect a producers maximum willingness-to-accept to produce various quantities of a good
iii. factors that affect a producers minimum willingness-to-accept to produce various quantities of a good

The market supply curve for a good is derived by:
i. horizontally summing the supply curves of the individual firms in the market
ii. vertically summing the supply curves of the individual firms in the market
iii. summing the quantity supplied by each firm at a given price and then repeating this over the range of prices

If the level of technology used in the production of a good improves, and assuming the quality of the good does not change, then:
i. more output may be obtained with a given amount of inputs compared to before the technological improvement
ii. a given amount of output may be obtained with fewer inputs compared to before the technological improvement
iii. the firm will increase its use of other inputs, such as the number of workers it employs
iv. market demand for the good will increase

Considering the market for gasoline, which of the following would result in an increase in market supply?
i. a decrease in the price of gasoline
ii. an improvement in oil extraction and refining technologies
iii. an increase in the wage rates paid to gasoline refinery workers
iv. a decrease in the price of crude oil, a key input used to produce gasoline
v. the imposition of a federal gasoline tax aimed a decreasing the emission of greenhouse gases

Suppose a market has two identical sellers. If each sellers supply function is given by P = 20 + Q, then the market supply function is:

From the market framework discussed in class and the readings, it may be concluded that in order for a good to be exchanged between a seller and a buyer, it must be that:

If the market demand function is given by P = 80 - 0.3Q and the market supply is given by P = 20 + 0.1Q, then the equilibrium price and quantity are:

Of concern are the affects of sustained summer droughts on the domestic supply of wheat. Noting that wheat is a primary ingredient in the production of bread and that potatoes are a substitute for bread, if the supply of wheat declines then it is reasonable to expect:

Suppose a perfectly competitive market is initially in equilibrium. If market demand and supply decrease simultaneously, then equilibrium:

Considering the demand side of a market for a good, the consumer surplus derived by an individual:
i. is the difference between the maximum amount the consumer is willing to pay on each unit and the minimum prices that producers are willing to accept
ii. is the difference between the minimum amount the consumer is willing to pay on each unit and the price he/she
actually pays
iii. is the difference between the maximum amount the consumer is willing to pay on each unit and the price he/she actually pays
iv. will decrease if price increases

Suppose the market demand for a good is described by the equation P = 120 - 2Q. If a change in market supply results in price decreasing from P0 = $80 to P1 = $70, then the resulting change in consumer surplus is:

1. In economics, the demand for a good refers to the amount of the good that people:
a. Will buy at alternative income levels
b. Need to achieve a minimum standard of living.
c. Will buy at various prices
d. Would like to have if the good were free
2. The term ceteris paribus means that:
a. What is for the individual is not necessarily true for the whole
b. All variables except those specified are constant
c. Everything is variable
d. No one knows which variables will change and which will remain constant.
3. When economist talk about supply, they are referring to a relationship between price received for each unit sold and the ____________________.
a. Quantity supplied
b. Demand schedule
c. Demand curve
d. Market price
4. But nearly all supply curves share a basic similarity: they slop______________.
a. Up from left to right
b. Down from left to right
c. Up from right to left
d. Down from right to left
5. The nature of demand indicates that as the price of a good increases:
a. Suppliers wish to sell less of it.
b. Buyers desire to purchase less of it
c. More of it is desired
d. More of it is produced
6. Any given demand or supply curve is based on the certeris paribus assumption that _______.
a. Everything is variable
b. All else is held equal
c. No one knows which variables will change and which will remain constant
d. What is true for the individual is not necessary true for the whole.
7. Economist refer to the relationship that a higher price leads to lower quantity demand as the ______________.
a. Price model
b. Law of demand
c. Market equilibrium
d. Income gap
8. A perfect elastic supply curve is:
a. Vertical
b. Downward sloping to the left
c. Horizontal
d. Upward sloping to the right
9. A 10 percent increase in the price of soda leads to a 20 percent increase in the quantity of iced tea demanded. It appears that:
a. Elasticity of demand for iced tea is 2 and is elastic
b. Cross-price elasticity of demand for iced tea is -2
c. Cross-price elasticity of demand for soda is -0.5
d. Elasticity of demand for soda 0.5 AND IS INELASTIC
10. ___________ is the change in what is on the horizontal axis (quantity) divided by the change in what is the vertical axis (price).
a. Elasticity
b. Supply
c. Demand
d. Revenue
11. A severe freeze has once again damaged the Florida orange crop. The impact on the market for orange juice will be a leftward shift of:
a. The supply curve and the rightward shift of the demand curve resulting in a higher equilibrium price
b. Both the supply and demand curves
c. The supply curve
d. The demand curve, as consumers try to economize because the shortage.
12. Got the answer.
13. A drought decreases the supply of agricultural products, which means that at any given price a lower quantity will be supplied; conversely, especially good weather would shift the _____________.
a. Demand curve to the right
b. Supply curve to the left
c. Supply curve to the right
d. Demand curve to the left
14. Interpret the following statements:

1.When the term "price" is used in the law of demand, price refers to Select one:

a. the price of the well relative to the price of another good.

b. the nominal price of the well relative to its nominal price in the previous year.

c. the absolute price of the good.

d. the dollar price of the good.

2.In economics, the meaning of demand refers to Select one:

a. the quantities of a good that people will sell at various prices.

b. the total satisfaction that consuming good provides people at different prices.

c. how badly someone wants a good.

d. the quantities of a good that people will buy at various prices.

3.Which of the following illustrates the law of demand?

Select one:

a. College enrollment increases when federal tuition grants are readily available to students.

b. More people watch college basketball in March than in November.

c. The number of long-distance calls in the United States is greater on Christmas than on Valentine's Day.

d. The prevailing wage rate in an industry determines how many people choose to work in the industry.

4.The absolute price of a good is its

Select one:

a. money price.

b. projected price.

c. relative price.

d. subjective price.

5.The only variable that can affect a movement along the demand curve is

Select one:

a. the number of buyers.

b. income levels.

c. the price of the good itself.

d. the number of substitutes.

6.The price of an MP3 music player increased from $50 to $70 while the price of a music download increased from $1 to $2. The relative price of an MP3 music player in terms of music downloads Select one:

a. increased from 0.04 to 0.05.

b. decreased, but we need more information to know by how much.

c. increased, but we need more information to know by how much.

d. decreased from 50 to 35.

7.The quantity supplied of a particular good is the amount of the good that

Select one:

a. households want firms to sell at each price during a particular time period.

b. firms will actually end up buying at a particular price during a given time period.

c. firms are willing to sell at each price during a particular time period.

d. households are willing to consume at each particular price.

8.An increase in price will lead to an increase in quantity supplied. This statement is

Select one:

a. the law of supply.

b. untrue always.

c. the law of demand.

d. a normative statement.

9.Regarding the law of supply, which of the following statements is correct?

Select one:

a. As demand falls, supply rises.

b. The ceteris paribus assumption does not apply.

c. As the price of a good or service rises, the quantity supplied will increase.

d. As the price of a good or service rises, the quantity supplied will decrease.

10.A given supply curve illustrates Select one:

a. the relationship between expected future prices and quantity supplied.

b. the effect of a change in resource costs on the quantity supplied.

c. the effect of a change in technology on the quantity supplied.

d. the relationship between price and quantity supplied.

11.If there is a decline in the price of milk, an input in the production of ice cream, then there will be a(n)

Select one:

a. decrease in the supply of ice cream and a leftward shift of the supply curve.

b. increase in the supply of ice cream and a rightward shift of the supply curve.

c. increase in the quantity of ice cream supplied and a movement down along the supply curve.

d. decrease in the quantity of ice cream supplied and a movement up along the supply curve.

12. An improvement in technology in the production of computers would

Select one:

a. increase the demand for computers.

b. decrease the supply of computers.

c. decrease the demand for computers.

d. increase the supply of computers.

13.Which of the following is a non-price determinant of supply? Select one:

a. the number of consumers

b. technological advances in production

c. the price of related goods consumers may buy

d. consumers' incomes

14.Which of the following does NOT cause a rightward shift in the supply curve?

Select one:

a. a reduction in resource costs

b. an increase in technology

c. a reduction in the expected future price of the good

d. a reduction in the price of the good

15.Which of the following is a possible outcome of setting a legal maximum rental rate below the market-clearing rental rate?

Select one:

a. a decrease in the quantity of rental housing demanded

b. an increase in the quantity of rental housing supply

c. a black market in rental housing

d. a surplus of rental housing