ECN 100 Lecture Notes - Lecture 5: Ceteris Paribus, Production Function, Diminishing Returns

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12 Oct 2016

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Supply is the ability and willingness to produce, and sell specific quantities of a good at alternative prices. Businesses use factors of production as inputs to produce goods and services. Factors of production include land, labor, capital, and entrepreneurship. The production function is a technological relationship expressing the maximum quantity of a good attainable from different combinations of factor inputs. The production function shows the maximum output that could be produced by adjusting factor inputs. Labor is an input that adjusts easily. Output depends on how many inputs are used (output slows as more of an input is added) Ea(cid:272)h wo(cid:396)ke(cid:396)"s (cid:272)o(cid:374)t(cid:396)i(cid:271)utio(cid:374) to output (cid:272)a(cid:374) (cid:271)e (cid:395)ua(cid:374)tified: marginal physical product (mpp) is the change in total output associated with one additional unit of input. Mpp can be negative if too much labor is used. The limited availability of fixed inputs is the cause of diminishing returns: fixed inputs put a ceiling on potential output.

Related Questions

According to estimates presented in the textbook, which of the following factors made the smallest contribution to U.S. growth between 1928 and 1997?

A) Technology.
B) Human capital.
C) Physical capital.
D) Labor.

According to economist Hernando DeSoto, the lack of formal property rights in many poor countries limits economic growth because informal property rights:

A) lead to excessive investment in physical, social, and human capital.
B) limit the amount that businesses and households can borrow.
C) result in excessive government regulation.
D) decrease the labor force participation rate.

The theory of convergence depends on the assumption that:

A) population growth falls to replacement levels in all nations.
B) factors of production are mobile across borders.
C) technological advancement slows.
D) production functions have constant returns to scale.

The surge in foreign direct investment experienced by China and India in the early 2000s can best be explained by:

A) their higher marginal productivity of capital, which leads to lower production costs.
B) their lower marginal productivity of capital, which leads to lower production costs.
C) the limits they impose on factor mobility.
D) technological agglomeration.

The idea behind Say's Law is that people work because:

A) they like to work.
B) they want to buy things.
C) they want to accumulate wealth.
D) work gives them social status.

People's knowledge is a type of capital, called human capital.

A) True
B) False

The law of diminishing marginal productivity applies whenever:

A) output is increased.
B) all inputs are increased.
C) only one input is increased.
D) decreasing returns to scale are present.

13.

The theory of convergence argues that poor nations should, if they pursue the right policies,

A) grow at the same rate as rich nations.
B) grow faster than rich nations.
C) develop the same social-welfare structures as rich nations.
D) stop their exploitation by the rich nations.

14.

If increasing returns to scale exist, then an increase in output of exactly 3 percent is most likely to be produced by:

A) a decrease in all inputs of 3 percent.
B) an increase in all inputs of less than 3 percent.
C) an increase in all inputs of 3 percent.
D) an increase in all inputs of more than 3 percent.

15.

The production function is best represented in the following form:

A) Output = A.
B) Output = f(Labor, Capital, Land).
C) Output = A%u2022f(Labor, Capital, Land).
D) Output = [A%u2022f(Labor, Capital, Land)]^b.

16.

The effect of economic growth generally has been to make:

A) the poor poorer and the rich richer.
B) the poor richer and the rich poorer.
C) all income levels richer.
D) the rich richer but not affect the poor.

Scale economies describe what happens to output when:

A) one input changes.
B) all inputs change by the same percentage.
C) technology changes.
D) institutions change.

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

iii

i and iii

ii and iv

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:

the quantity demanded would decrease by 10 units and total expenditures on the good would decrease by $400

the quantity demanded would decrease by 15 units and total expenditures on the good would increase by $300

the quantity demanded would decrease by 30 units and total expenditures on the good would increase by $1200

the quantity demanded would increase by 20 units and total expenditures on the good would decrease by $800

the quantity demanded would increase by 10 units and total expenditures on the good would increase by $100

the quantity demanded would increase by 25 units and total expenditures on the good would increase by $1000

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 law of supply holds, and quantity supplied is completely insensitive to changes in price

the law of supply holds, and quantity supplied is highly sensitive to changes in price

the law of supply fails to hold, and quantity supplied is completely insensitive to changes in price

the law of supply fails to hold, and quantity supplied is highly sensitive to changes in price

none of the above

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

iii

i and ii

i and iii

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

iii

i and ii

i and iii

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:

buyer maximum willingness-to-pay is greater than seller minimum willingness-to-accept

buyer maximum willingness-to-pay is greater than or equal to seller minimum willingness-to-accept

buyer minimum willingness-to-pay is greater than or equal to seller maximum willingness-to-accept

buyer minimum willingness-to-pay is greater than seller maximum willingness-to-accept

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:

the price of wheat to fall, the supply of bread to increase, and the demand for potatoes to increase

the price of wheat to fall, the supply of bread to increase, and the demand for potatoes to decrease

the price of wheat to rise, the supply of bread to decrease, and the demand for potatoes to decrease

the price of wheat to rise, the supply of bread to decrease, and the demand for potatoes to increase

the price of wheat to rise, the supply of bread to increase, and the demand for potatoes to increase

the price of wheat to rise, the supply of bread to increase, and the demand for potatoes to decrease

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

price will rise, but the equilibrium quantity may either rise, fall, or remain unchanged

quantity will rise, but the equilibrium price may either rise, fall, or remain unchanged

price will fall, but the equilibrium quantity may either rise, fall, or remain unchanged

quantity will fall, but the equilibrium price may either rise, fall, or remain unchanged

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:

113. A production possibilities frontier shows the
A) the maximum attainable combinations of two goods that can beproduced with the available resources.
B) combinations of two goods that consumers desire most.
C)maximum output of two goods that can be produced with an unlimitedquantity of resources.
D) demand for two goods.

114. Being on the production possibilities frontier implies thatmore of one good can be produced only by
A) decreasing the quantity of the other good produced.
B)increasing the quantity of the other good produced.
C) lowering the price of the good.
D) raising the price of the good.
E) None Of The Above

116. An output combinationis technically efficient if
A) it is possible to produce more of all goods.
B) it is possible toproduce more of one good without producing less ofanother.
C) it is not possible to produce more of one good without producingless of another.
D) it is not possible to produce more of one good at any cost.

117. Suppose in an economysome resources are not utilized in their most productive use. Ifsociety decides that it wants more of onegood,
A) it will have to increase the quantity of resources in theeconomy.
B) it will have to give up production and consumption of some othergood.
C) it can only do so iftechnology advances.
D) it can achieve this without giving up another good by employingthe under-utilized resources. E) None Of TheAbove

118. In the productionpossibilities frontier framework, unemployment is representedby
A) an inward shift of thecurve.
B) a point located inside the curve.
C) a point located outside the curve.
D) a point located on the curve

119. Which of the followingwould not shift a nation's production possibilities frontier?
A) a liberal immigrationpolicy that welcomes foreign labor
B) an increase in a nation's capital stock
C) discovery of oil, a vital input in the production process
D) an increase in the general price level.

132. If the price of SUVswere to increase, we would expect:
A) the demand for gasoline to increase.
B) the demand for gasoline to decrease.
C) the supply of gasoline to increase.
D) the supply of gasoline to decrease.
E) both B and D to occur.

E) None Of TheAbove

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ECN 100 Lecture Notes - Lecture 5: Ceteris Paribus, Production Function, Diminishing Returns

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