ECO 1104 Lecture : Introduction to Microeconomics - ECO 1104 - Part 2

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browndeer77

19 Apr 2012

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Note: when p rises, producers supply a large quantity of hybrids, even though the s curve has not shifted. Example: suppose that in the year 2010, the number of births is temporarily high. How does this baby boom affect the price of baby-sitting services in 2015 and 2025? (hint: Five-year-olds need baby-sitters, whereas fteen-year-olds can be babysitters. ) Objectives: learn the meaning of the elasticity of demand and the elasticity of supply, examine what determines the elasticity of demand and the elasticity of supply, learn how to apply the concept of elasticity. Elasticity: de nition, the price elasticity of demand is a measure of how much the quantity demanded of a good responds to a change in the price of that good. Computing the price elasticity of demand: an annoying problem with the preceding formula is that the elasticity varies depending on whether it is a price increase or a price decrease, example:

Related Questions

When demand for a good is very elastic, revenue ________ when the price falls.

(2)

An elasticity measure less than one means that demand is __________.

(3)

An elasticity measure greater than one means that demand is __________.

(4)

The Latin expression ceteris paribus means

	having made all other necessary changes.
	holding constant all other variables.
	assuming all households have similar incomes.
	given the level of income in the economy.

(5)

A variable measured in terms of money is called a ____________________.

	real variable
	nominal variable
	macroeconomic variable
	microeconomic variable

(6)

Which of the following is true about the importance of money in economics?

	Money is important in both macroeconomics and microeconomics.
	Money is important in macroeconomics but not microeconomics.
	Money is important in microeconomics but not macroeconomics.
	Money is not important in either microeconomics or macroeconomics.

(7)

What is the difference between normative and positive economics?

	Positive economics is descriptive and predictive; normative economics is prescriptive.
	Positive economics highlights the positive aspects of the economy; normative economics highlights the average features.
	Positive economics studies the actions of individuals; normative economics studies the actions of households.
	Positive economics is an applied social science; normative economics is a theoretical social science.

(8)

The slope of the demand curve is negative because

	the quantity of a good demanded decreases as income declines.
	the quantity of a good demanded increases as income declines.
	the quantity of a good demanded increases as the price declines.
	the quantity of a good demanded decreases as the price declines.

(9)

What is the result of an increase in the price of bread, a normal good?

	The demand curve shifts to the right.
	The demand curve shifts to the left.
	The quantity demanded increases.
	The quantity demanded decreases.

(10)

What is the effect on demand for bread when the price of bagels, a substitute for bread, rises?

	The demand curve for bread shifts to the right.
	The demand curve for bread shifts to the left.
	The quantity of bread demanded increases.
	The quantity of bread demanded decreases.

(11)

Which of the following would cause the supply curve for bread to shift inward?

	An increase in the price of bread
	An increase in the price of bagels
	A decrease in the price of bread
	An increase in the price of flour

(12)

An improvement in technology shifts the supply curve outward because

	at every price, firms find producing the good to be more profitable.
	the price of the good increases.
	at every price, firms find producing the good to be less profitable.
	the price of the good decreases.

(13)

Which of the following factors does not affect how much bread a baker is willing to produce?

	The price of bread
	The demand for bread
	The cost of inputs
	Technology

(14)

How do expectations of prices affect how much of a good producers are willing to sell?

	Expectations of prices affect only demand, not supply.
	Actual prices, not expectations of prices, affect supply.
	If producers expect prices to fall in the future, they supply less at every price.
	If producers expect prices to rise in the future, they supply less at every price.

(15)

When the price of a good is above equilibrium level,

	the quantity demanded exceeds the quantity supplied.
	the quantity supplied exceeds the quantity demanded.
	the supply curve shifts to the left.
	the supply curve shifts to the right.

(16)

At a price of P₀ in the diagram below, which of the following statements is true?

	Supply equals demand.
	There is excess demand.
	There is excess supply.
	There is scarcity.

(17)

If demand for bread increases at every price, the equilibrium price of bread will

	fall.
	rise.
	remain unchanged.
	depend on income.

(18)

If the demand for bread declines, then

	at the original equilibrium price, there is excess demand.
	at the original equilibrium price, there is excess supply.
	the supply curve shifts to the right.
	the supply curve shifts to the left.

(19)

Peanut butter and jelly are complementary goods. When the price of peanut butter rises, the demand for jelly ________ and the price of jelly ________.

	rises; falls
	rises; rises
	falls; rises
	falls; falls

(20)

The measure of elasticity that economists use is

	always a positive number.
	always a negative number.
	positive when demand is elastic and negative when demand is inelastic.
	negative when demand is elastic and positive when demand is inelastic.

(21)

Which of the following formulas is the correct expression for the slope of a line?

(22)

Graphically how would an increase in income affect the demand for hamburgers?

	The slope of the demand curve would increase.
	The slope of the demand curve would decrease.
	The demand curve would shift outward, parallel to the original demand curve.
	The demand curve would shift inward, parallel to the original demand curve.

(23)

Given the equation P = $6.00 ? $.40Q, where P is the price of the good and Q is the quantity of the good demanded, how many units will this consumer demand if the price is $3.60?

	1.44 units
	3 units
	3.6 units
	6 units

(24)

Which of the following is true about unit elasticity?

	Revenues remain unchanged when the price changes.
	Elasticity of demand increases as one moves down the demand curve.
	Elasticity of demand decreases as one moves down the demand curve.
	The elasticity of demand is greater than one at every point along the demand curve.

(25)

Which of the following could be a determinant of the quantity demanded of a good?

	The price of the good
	The price of related goods
	Income
	Expectations about the future price of the product
	All of the above

violethare488

Demand curve:

The demand curve is the graph depicting the relationship between the price of a certain commodity and the amount of it that consumers are willing and able to purchase at any given price. It is a graphic representation of a market demand schedule. The demand curve for all consumers together follows from the demand curve of every individual consumer: the individual demands at each price are added together, assuming independent decision-making. Demand curves are used to estimate behaviors in a competitive market and are often combined with supply curves to estimates the equilibrium price. Demand curves are usually considered as theoretical structures that are expected to exist in the real world, but real-world measurements of actual demand curves are difficult and rare.

The demand curve will move downward from the left to the right, which expresses the law of demand.

If the price of corn rises, consumers will have an incentive to buy less corn and substitute other foods, so the total quantity of corn consumers’ demand will fall. The degree to which rising price translates into falling demand is called demand elasticity or price elasticity of demand. If a factor besides price or quantity changes, a new demand curve needs to be drawn. For example, say that the population of an area explodes, increasing the number of mouths to feed. In this scenario, more corn will be demanded even if the price remains the same, meaning that the curve itself shifts to the right.

According to my view, the demand curve for the Apple Video iPod will increase. According to the given paragraph iPod is thinner and lighter. The hardware and software ecosystem offers good content options and also portable. These are the main qualities expected by the customers. Henceforth customer wants to buy this product in the future also. If the price of the product increases in the future the demand for the product also increases because customers demand more products thinking of price increase in the future. At the same time if the price decreases in this case also customers will buy the product because they think that the good product is coming at a reasonable price. The demand curve for Apple Video iPod in the future may be like follows.

What is your opinion on a competitor product which has similar features to that of an i-pad or say it is better than i-pad and is offered at a comparatively cheaper price, how this will affect the i-pad demand curve and why?

bronzemule740

Please show work so i can learn how this was done. Thank you.

5. If supply increases and demand also increases, we can conclude that the new equilibrium:

The multivariate demand function (below) is needed for questions 6 â 12.

Setting: U.S. Auto manufacturers are trying to develop a multivariate function with which to estimate the demand for their gas-electric hybrid compact cars. Here is one that Motors General developed for its Jolt:

Qj = 65000 â 20Pj + 20Pf + 35Pt â 5Pb + 0.2Tc + 0.05Y + 10Mg + 0.04A

Where:

Qj = the number of Jolts demanded per week.

Pj = the price of each new Jolt (in $).

Pf = the price of each new Ford gas-electric hybrid (in $).

Pt = the price of each new Toyota gas-electric hybrid (in $).

Pb = the price of replacement batteries for the Jolt (in $).

Tc = the amount of tax credit incentive offered with the purchase of a new hybrid (in $).

Y = average weekly disposable income of a typical Jolt purchaser (in $).

Mg = the miles per gallon of gas rating of the Jolt (in miles per gallon).

A = average weekly Jolt advertising expenditure (in $).

6. If all variables remain unchanged except that the price of Jolts (Pj) increases by $1000, then the quantity demanded of Jolts will:

7. If all variables remain unchanged except that the average weekly disposable income (Y) increases by $350 then demand for Jolts will:

8. You can tell by looking at the sign of the price of Toyota hybrids (Pt) that they are considered:

salmonshark55

ECO 1104 Lecture : Introduction to Microeconomics - ECO 1104 - Part 2

ECO 1104 Full Course Notes

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