Question 1

Suppose the price of a Giffen good, X, decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

Accepted Answer

For a Giffen good, when the price decreases, the substitution effect leads consumers to buy more of the good because it becomes relatively cheaper compared to other goods. However, the income effect (which dominates in the case of Giffen goods) causes consumers to buy less of the good overall, as they no longer need to spend as much of their income to afford the good, leading to a decrease in consumption.

Question 2

Abby's utility function is given by U = X²Y². For this utility function, MU_x = 2XY² and MU_y = 2X²Y. If good X costs $10 and good Y costs $5, then Abby will consume ____ times as many units of good Y as she does units of good X.

Accepted Answer

The marginal utility per dollar spent on each good should be equal at the optimum. Given the marginal utilities (MU) for X and Y, we have MUx/PriceX = MUy/PriceY. Substituting the given values, we get (2XY)/10 = (2XY)/5, simplifying to 1/10 = 1/5, which implies that for every unit of X, 2 units of Y are consumed to equalize the marginal utility per dollar spent.

Question 3

(Figure: Books and Paintings I) The curve that goes through the points A, B, C, and D is called the:

Accepted Answer

The answer of (Figure: Books and Paintings I) The curve...

Question 4

A consumer's bundle includes the inferior good X and the normal good Y. According to the income effect, a(n) _____ in the price of good X or a(n) _____ in the price of good Y will cause the consumer to buy more of good X.

Accepted Answer

The answer of A consumer's bundle includes the inferior good...

Question 5

(Figure: Good Y and Good X II) Which of the following statements are TRUE?  I. The demand curve for good Y shifted outward.
II) The demand curve for good Y shifted inward.
III) The demand curve for good X shifted inward.
IV) The price of good Y decreased, causing an increase in the quantity demanded of good Y.

Accepted Answer

The answer of (Figure: Good Y and Good X II)...

Question 6

Suppose that Bella's utility function from bananas (B) and chocolate (C) is  . Her budget is $15, and the price of chocolate is $3.
Bella's demand for bananas is ____.

Accepted Answer

The answer of Suppose that Bella's utility function from bananas...

Question 7

The substitution effect of a price increase:

Accepted Answer

The substitution effect occurs when consumers react to an increase in a good's price by consuming less of that good and more of a substitute good. It reflects the change in consumption patterns due to a change in relative prices, leading consumers to substitute away from the more expensive good towards cheaper alternatives.

Question 8

We can use the calculus of the consumer choice model for each of the following EXCEPT:

Accepted Answer

The calculus of the consumer choice model is used to analyze consumer behavior and how changes in variables like income, prices of goods, and tastes affect the demand for goods. It does not directly address changes in the supply curve, which are typically influenced by factors related to production costs, technology, and supplier behavior rather than consumer preferences.

Question 9

Suppose the price of the normal good X decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

Accepted Answer

The substitution effect implies that when the price of a good decreases, it becomes relatively cheaper compared to other goods, leading consumers to buy more of it. The total effect, which includes both the substitution and income effects, also results in an increase in consumption of the good, as the consumer's purchasing power increases with the price decrease.

Question 10

(Figure: Tattoos and Football Tickets I) When the price of football tickets increases, the substitution effect decreases the number of tickets bought from:

Accepted Answer

The answer of (Figure: Tattoos and Football Tickets I) When...

Question 11

Suppose that there are two goods, X and Y. The utility function is U = XY + 2Y. The price of X is $5, and the price of Y is P. Income is $60. The demand for Y as a function of P is X = ____.

Accepted Answer

To find the demand for Y as a function of P, we first need to maximize the utility function U = XY + 2Y given the budget constraint, which is 5X + PY = 60. Rearranging the budget constraint for X gives us X = (60 - PY)/5. Substituting this expression for X in the utility function gives us U = Y(60 - PY)/5 + 2Y. To maximize utility, we would typically take the derivative of U with respect to Y and set it to zero. However, the question asks for the demand for Y as a function of P, which suggests a misunderstanding in the question's phrasing. Assuming it seeks the demand for X or how to express the relationship between goods and prices under the given budget constraint, the direct approach to find demand for Y given the prices and income directly isn't straightforward from the provided utility function and constraint without further optimization steps. The correct approach involves solving the utility maximization problem, which typically requires setting up the Lagrangian, but the provided options and the question suggest a simpler interpretation or a mistake in the question's setup. Given the options and the typical approach to such problems, none directly apply to finding the demand for Y as a function of P without additional steps. However, if we interpret the question as aiming to find an expression related to the budget constraint or a misinterpretation involving the demand for X, option B could be seen as a plausible answer if it were derived from a different setup or calculation mistake. The correct interpretation likely involves a step not fully detailed in the question, such as maximizing utility subject to the budget constraint and solving for Y, but this isn't directly achievable with the information given in the standard economic model.

Question 12

Suppose that a consumer has utility U(X,Y) = 2XY + X and income of $499 to spend on goods X and Y. The prices of X and Y are $1 and $2 per unit respectively. The optimal basket of goods is ____X and ____Y.

Accepted Answer

To find the optimal basket of goods, we need to maximize the utility function U(X,Y) = 2XY + X subject to the budget constraint, which is $499 = $1*X + $2*Y. Solving the optimization problem using the method of Lagrange multipliers or by setting up the budget constraint to solve for one variable in terms of the other and then substituting back into the utility function, we find that the combination of X and Y that maximizes utility given the budget constraint and prices is 250 units of X and 124.5 units of Y.

Question 13

(Figure: Quantity of Goods Y and X II) Good X is a(n) _____ good, and good Y is a(n) _____ good.

Accepted Answer

The answer of (Figure: Quantity of Goods Y and X...

Question 14

(Figure: Quantity of Good Y and X IV) The price of good Y decreased from $20 to $10.  Goods X and Y are considered ____.

Accepted Answer

The answer of (Figure: Quantity of Good Y and X...

Question 15

Suppose the demand for good X shifts in. Which of the following statements is (are) possibly TRUE?
I. The price of good X increased.
II. The price of a substitute good decreased.
III. The price of a complement good increased.

Accepted Answer

A decrease in the price of a substitute good (II) or an increase in the price of a complement good (III) can cause the demand for good X to decrease, leading to a shift in the demand curve.

Question 16

(Figure: Price and Quantity of Vocal Lessons I) Suppose Lizzie and Miranda are the only two customers in the market for voice lessons. Lizzie's demand is Q_M = 40 - 4P, and Miranda's demand is Q_V = 75 - 5P. Which panel represents the market demand for vocal lessons?

Accepted Answer

The answer of (Figure: Price and Quantity of Vocal Lessons...

Question 17

Julie spends all of her income on gasoline and pizza. Gasoline costs $4 per gallon and pizza costs $2 per slice. When Julie's income is $50 per week, she purchases 5 gallons of gasoline and 15 slices of pizza. When her income rises to $80 per week, she buys 15 gallons of gasoline and 10 slices of pizza. Which of the following statements is true?

Accepted Answer

The answer of Julie spends all of her income on...

Question 18

Suppose the price of good X, a Giffen good, increases. Which of the following statements are TRUE?
I. The substitution effect of the price increase causes consumers to buy less of good X.
II. The substitution effect of the price increase causes consumers to buy more of good X.
III. The income effect of the price increase causes consumers to buy more of good X.
IV. The income effect of the price increase causes consumers to buy less of good X.

Accepted Answer

For a Giffen good, when the price increases, the substitution effect (I) indeed causes consumers to buy less of it because other goods become relatively cheaper. However, the defining characteristic of a Giffen good is that the income effect (III) is so strong that it outweighs the substitution effect, leading consumers to buy more of the good as it becomes more expensive, due to the good being an inferior good and consuming a large portion of the consumer's income.

Question 19

Suppose that Bella's utility function from bananas (B) and chocolate (C) is  . Her budget is $15, and the price of chocolate is $3.
If Bella's budget increases to $20, then bananas are ____ for Bella.

Accepted Answer

The answer of Suppose that Bella's utility function from bananas...

Question 20

Suppose the price of an inferior good X, that follows the law of demand, decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

Accepted Answer

The substitution effect implies that when the price of good X decreases, it becomes relatively cheaper compared to other goods, leading consumers to buy more of it. The total effect, considering it's an inferior good, still results in an increase in consumption because the income effect (which might lead to buying less of an inferior good as income effectively increases) is outweighed by the substitution effect in this scenario.

Quiz 5: Individual and Market Demand

Suppose the price of a Giffen good, X, decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.

Abby's utility function is given by U = X²Y². For this utility function, MU_x = 2XY² and MU_y = 2X²Y. If good X costs $10 and good Y costs $5, then Abby will consume ____ times as many units of good Y as she does units of good X.

(Figure: Books and Paintings I) The curve that goes through the points A, B, C, and D is called the:

A consumer's bundle includes the inferior good X and the normal good Y. According to the income effect, a(n) _ in the price of good X or a(n) _ in the price of good Y will cause the consumer to buy more of good X.

Suppose that Bella's utility function from bananas (B) and chocolate (C) is . Her budget is $15, and the price of chocolate is $3. Bella's demand for bananas is ____.

The substitution effect of a price increase:

We can use the calculus of the consumer choice model for each of the following EXCEPT:

Suppose the price of the normal good X decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.

(Figure: Tattoos and Football Tickets I) When the price of football tickets increases, the substitution effect decreases the number of tickets bought from:

Suppose that there are two goods, X and Y. The utility function is U = XY + 2Y. The price of X is $5, and the price of Y is P. Income is $60. The demand for Y as a function of P is X = ____.

Suppose that a consumer has utility U(X,Y) = 2XY + X and income of $499 to spend on goods X and Y. The prices of X and Y are $1 and $2 per unit respectively. The optimal basket of goods is X and Y.

(Figure: Quantity of Goods Y and X II) Good X is a(n) _ good, and good Y is a(n) _ good.

(Figure: Quantity of Good Y and X IV) The price of good Y decreased from $20 to $10. Goods X and Y are considered ____.

Suppose the demand for good X shifts in. Which of the following statements is (are) possibly TRUE? I. The price of good X increased. II. The price of a substitute good decreased. III. The price of a complement good increased.

(Figure: Price and Quantity of Vocal Lessons I) Suppose Lizzie and Miranda are the only two customers in the market for voice lessons. Lizzie's demand is Q_M = 40 - 4P, and Miranda's demand is Q_V = 75 - 5P. Which panel represents the market demand for vocal lessons?

Suppose that Bella's utility function from bananas (B) and chocolate (C) is . Her budget is $15, and the price of chocolate is $3. If Bella's budget increases to $20, then bananas are ____ for Bella.

Suppose the price of an inferior good X, that follows the law of demand, decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.

Quiz 5: Individual and Market Demand

Suppose the price of a Giffen good, X, decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

Abby's utility function is given by U = X2Y2. For this utility function, MUx = 2XY2 and MUy = 2X2Y. If good X costs $10 and good Y costs $5, then Abby will consume ____ times as many units of good Y as she does units of good X.

(Figure: Books and Paintings I) The curve that goes through the points A, B, C, and D is called the:

A consumer's bundle includes the inferior good X and the normal good Y. According to the income effect, a(n) _____ in the price of good X or a(n) _____ in the price of good Y will cause the consumer to buy more of good X.

Suppose that Bella's utility function from bananas (B) and chocolate (C) is . Her budget is $15, and the price of chocolate is $3. Bella's demand for bananas is ____.

The substitution effect of a price increase:

We can use the calculus of the consumer choice model for each of the following EXCEPT:

Suppose the price of the normal good X decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

(Figure: Tattoos and Football Tickets I) When the price of football tickets increases, the substitution effect decreases the number of tickets bought from:

Suppose that there are two goods, X and Y. The utility function is U = XY + 2Y. The price of X is $5, and the price of Y is P. Income is $60. The demand for Y as a function of P is X = ____.

Suppose that a consumer has utility U(X,Y) = 2XY + X and income of $499 to spend on goods X and Y. The prices of X and Y are $1 and $2 per unit respectively. The optimal basket of goods is ____X and ____Y.

(Figure: Quantity of Goods Y and X II) Good X is a(n) _____ good, and good Y is a(n) _____ good.

(Figure: Quantity of Good Y and X IV) The price of good Y decreased from $20 to $10. Goods X and Y are considered ____.

Suppose the demand for good X shifts in. Which of the following statements is (are) possibly TRUE? I. The price of good X increased. II. The price of a substitute good decreased. III. The price of a complement good increased.

(Figure: Price and Quantity of Vocal Lessons I) Suppose Lizzie and Miranda are the only two customers in the market for voice lessons. Lizzie's demand is QM = 40 - 4P, and Miranda's demand is QV = 75 - 5P. Which panel represents the market demand for vocal lessons?

Suppose that Bella's utility function from bananas (B) and chocolate (C) is . Her budget is $15, and the price of chocolate is $3. If Bella's budget increases to $20, then bananas are ____ for Bella.

Suppose the price of an inferior good X, that follows the law of demand, decreases. In this case, the substitution effect states that the consumer purchases _____ of good X, and the total effect is _____ in consumption of good X.

Suppose the price of a Giffen good, X, decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.

Abby's utility function is given by U = X²Y². For this utility function, MU_x = 2XY² and MU_y = 2X²Y. If good X costs $10 and good Y costs $5, then Abby will consume ____ times as many units of good Y as she does units of good X.

A consumer's bundle includes the inferior good X and the normal good Y. According to the income effect, a(n) _ in the price of good X or a(n) _ in the price of good Y will cause the consumer to buy more of good X.

Suppose the price of the normal good X decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.

Suppose that a consumer has utility U(X,Y) = 2XY + X and income of $499 to spend on goods X and Y. The prices of X and Y are $1 and $2 per unit respectively. The optimal basket of goods is X and Y.

(Figure: Quantity of Goods Y and X II) Good X is a(n) _ good, and good Y is a(n) _ good.

(Figure: Price and Quantity of Vocal Lessons I) Suppose Lizzie and Miranda are the only two customers in the market for voice lessons. Lizzie's demand is Q_M = 40 - 4P, and Miranda's demand is Q_V = 75 - 5P. Which panel represents the market demand for vocal lessons?

Suppose the price of an inferior good X, that follows the law of demand, decreases. In this case, the substitution effect states that the consumer purchases _ of good X, and the total effect is _ in consumption of good X.