Question 1

The demand for video recorders has been estimated to be Q_v = 134 − 1.07P_f + 46P_m −2.1P_v − 5I,where Q_v is the quantity of video recorders,P_f denotes the price of video recorder film,P_m is the price of attending a movie,P_v is the price of video recorders,and I is income.Based on the estimated demand equation we can conclude:

Accepted Answer

The negative coefficient of income (I) indicates that video recorders are inferior goods, as demand decreases with an increase in income.

Question 2

You are the manager of a popular shoe company.You know that the advertising elasticity of demand for your product is 0.15.How much will you have to increase advertising in order to increase demand by 10 percent?

Accepted Answer

The formula to calculate the change in demand due to a change in advertising expenditure is:
% change in demand = Advertising elasticity of demand x % change in advertising expenditure
Given that the advertising elasticity of demand is 0.15 and we want to increase demand by 10 percent, we can substitute the values and solve for % change in advertising expenditure:
10 = 0.15 x % change in advertising expenditure
% change in advertising expenditure = 10/0.15 = 66.7 percent
Therefore, the company will have to increase advertising by 66.7 percent in order to increase demand by 10 percent.

Question 3

If the price of pork chops falls from $8 to $6,and this leads to an increase in demand for apple sauce from 100 to 140 jars,what is the cross-price elasticity of apple sauce and pork chops at a pork chop price of $6?

Accepted Answer

The cross-price elasticity of demand is calculated as the percentage change in quantity demanded of one good divided by the percentage change in price of another good. The percentage change in quantity demanded of apple sauce is (140-100)/100 = 0.4 or 40%. The percentage change in price of pork chops is (6-8)/8 = -0.25 or -25%. The cross-price elasticity is 0.4 / -0.25 = -1.6. However, the closest option provided is -0.86, which seems to be an error in the options.

Question 4

Suppose the demand for good x is ln Q_x^d = 21 − 0.8 ln P_x − 1.6 ln P_y + 6.2 ln M + 0.4 ln A_x.Then we know that the own price elasticity for good x is:

Accepted Answer

The own price elasticity of demand is given by the coefficient of ln P_x, which is -0.8. Since the absolute value is less than 1, the demand is inelastic.

Question 5

If the cross-price elasticity between goods A and B is negative,we know the goods are:

Accepted Answer

When the cross-price elasticity between goods A and B is negative, it indicates that the two goods are complements. This is because when the price of one good (say, A) increases, the demand for the other good (B) decreases, since they are used together - hence the negative sign.

Question 6

Suppose the demand function is given by Q_x^d = 8P_x^0.5 P_y^0.25 M^0.12 H.Then the cross-price elasticity between goods x and y is:

Accepted Answer

The cross-price elasticity between goods x and y can be calculated as follows: % change in quantity demanded of x / % change in price of y. Using the midpoint formula, we can find the % change in quantity demanded of x when the price of y changes from $10.25 to $12: ((8 / ((10.5 + 12)/2)) / (10.25 / ((10.25 + 12)/2))) = 0.25. Therefore, the cross-price elasticity between goods x and y is 0.25, which means they are somewhat complementary goods.

Question 7

Suppose demand is given by Q _x^d = 50 − 4P_x + 6P_y + A_x,where P_x = $4,P_y = $2,and A_x = $50.What is the quantity demanded of good x?

Accepted Answer

The quantity demanded of good x can be calculated by substituting the given values into the demand equation: Q = 50 - 4(4) + 6(2) + 50 = 50 - 16 + 12 + 50 = 96.

Question 8

Suppose the demand function is Q _x^d = 100 − 8P_x + 6P_y - M.If P_x = $4,P_y = $2,and M = $10,what is the cross-price elasticity of good x with respect to the price of good y?

Accepted Answer

The cross-price elasticity of demand is calculated as (dQx/dPy) * (Py/Qx). Here, dQx/dPy = 6, Py = 2, and Qx = 100 - 8(4) + 6(2) - 10 = 80. So, the elasticity is (6 * 2) / 80 = 0.15. However, the closest option is 0.17.

Question 9

Suppose the demand function is given by Q_x^d = 8P_x^0.5 P_y^0.25 M^0.12 H.Then good x is:

Accepted Answer

The demand function shows a positive relationship between the quantity demanded of good x and its own price (PS1) and a negative relationship between the quantity demanded of good x and the price of good y (PS1U1B1y). This indicates that good x is a regular good (not an inferior good). If the price of good x increases, the quantity demanded of it decreases while the quantity demanded of good y increases, implying that good x could be a complement for good y. However, this complement relationship cannot be confirmed without more information. The fact that the coefficient of price elasticity of demand (MS1U1P1) for good x is relatively low (0.12) suggests that the demand for good x is relatively inelastic, but it does not indicate that it is perfectly inelastic.

Question 10

If the cross-price elasticity between ketchup and hamburgers is −1.2,a 4 percent increase in the price of ketchup will lead to a 4.8 percent:

Accepted Answer

The negative cross-price elasticity of -1.2 indicates that ketchup and hamburgers are complements. A 4% increase in the price of ketchup leads to a 4.8% drop in the quantity demanded of hamburgers, as the formula for cross-price elasticity is (% change in quantity demanded of good Y) / (% change in price of good X).

Question 11

Suppose the demand for good x is ln Q_x^d = 21 − 0.8 ln P_x − 1.6 ln P_y + 6.2 ln M + 0.4 ln A_x.Then we know good x is:

Accepted Answer

Since the coefficient of the income variable (ln M) is positive, good x is a normal good.

Question 12

If the income elasticity for lobster is 0.4,a 40 percent increase in income will lead to a:

Accepted Answer

Income elasticity of demand measures how the quantity demanded of a good responds to a change in income, calculated as the percentage change in quantity demanded divided by the percentage change in income. Here, with an income elasticity of 0.4 and a 40% increase in income, the demand for lobster would increase by 0.4 * 40% = 16%.

Question 13

Suppose the demand for good x is ln Q_x^d = 21 − 0.8 ln P_x − 1.6 ln P_y + 6.2 ln M + 0.4 ln A_x.Then we know goods x and y are:

Accepted Answer

The coefficient of ln P_y is -1.6, indicating that as the price of good y increases, the demand for good x decreases, suggesting that goods x and y are complements.

Question 14

The statistical analysis of economic phenomena is defined as:

Accepted Answer

Econometrics refers to the statistical methods used to analyze and model economic phenomena, including regression analysis, time series analysis, and hypothesis testing. Variance, confidence intervals, and standard deviation are statistical concepts that are used within econometrics, but they do not capture the full scope of the field.

Question 15

Suppose the demand function is given by Q_x^d = 8P_x^0.5 P_y^0.25 M^0.12 H.Then the demand for good x is:

Accepted Answer

The demand elasticity is determined by the sum of the exponents of the price terms in the demand function. Here, the exponent of P_x is 0.5, which is less than 1, indicating that the demand is inelastic.

Question 16

Suppose demand is given by Q _x^d = 50 − 4P_x + 6P_y + A_x,where P_x = $4,P_y = $2,and A_x = $50.What is the advertising elasticity of demand for good x?

Accepted Answer

The answer of Suppose demand is given by Q _x^d...

Question 17

The elasticity which shows the responsiveness of the demand for a good due to changes in the price of a related good is the:

Accepted Answer

Cross-price elasticity measures the responsiveness of demand for a good due to changes in the price of a related good. It is calculated as the percentage change in the quantity demanded of one good divided by the percentage change in the price of the related good. Options A, B, and C do not involve changes in the prices of related goods.

Question 18

You are the manager of a supermarket,and you know that the income elasticity of peanut butter is exactly −0.7.Due to the economic recession,you expect incomes to drop by 15 percent next year.How should you adjust your purchase of peanut butter?

Accepted Answer

The income elasticity of demand for peanut butter is -0.7, meaning it's an inferior good (negative elasticity). With a 15% drop in income, demand for peanut butter increases because people switch to less expensive goods. The calculation is -0.7 * (-15%) = 10.5%. Therefore, you should buy 10.5% more peanut butter.

Question 19

The elasticity that measures the responsiveness of consumer demand to changes in income is the:

Accepted Answer

The income elasticity measures how much the quantity demanded of a good changes in response to a change in income. Therefore, it is directly related to changes in consumer income, making choice A the correct answer.

Question 20

An income elasticity less than zero tells us that the good is:

Accepted Answer

An income elasticity less than zero indicates that the good is an inferior good. Inferior goods are those for which demand decreases as income increases, as consumers will switch to purchasing higher-quality alternatives as their income rises.

Quiz 3: Quantitative Demand Analysis

You are the manager of a popular shoe company.You know that the advertising elasticity of demand for your product is 0.15.How much will you have to increase advertising in order to increase demand by 10 percent?

If the price of pork chops falls from $8 to $6,and this leads to an increase in demand for apple sauce from 100 to 140 jars,what is the cross-price elasticity of apple sauce and pork chops at a pork chop price of $6?

Suppose the demand for good x is ln Qxd = 21 − 0.8 ln Px − 1.6 ln Py + 6.2 ln M + 0.4 ln Ax.Then we know that the own price elasticity for good x is:

If the cross-price elasticity between goods A and B is negative,we know the goods are:

Suppose the demand function is given by Qxd = 8Px0.5 Py0.25 M0.12 H.Then the cross-price elasticity between goods x and y is:

Suppose demand is given by Q xd = 50 − 4Px + 6Py + Ax,where Px = $4,Py = $2,and Ax = $50.What is the quantity demanded of good x?

Suppose the demand function is Q xd = 100 − 8Px + 6Py - M.If Px = $4,Py = $2,and M = $10,what is the cross-price elasticity of good x with respect to the price of good y?

Suppose the demand function is given by Qxd = 8Px0.5 Py0.25 M0.12 H.Then good x is: