PRINCIPLES OF MICROECONOMICS (OER)
2nd Edition
ISBN: 9781947172340
Author: Timothy Taylor, Steven A. Greenlaw
Publisher: OpenStax
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Chapter 8, Problem 13RQ
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3. Consider the following regression equation, where Cigs is daily spending on cigarettes in poundssterling (£), Y earsEduc is years of education, and F emale equals one if an individual is femaleand zero otherwise (standard errors in parentheses):Cigs [ = 4(1.6)− 0.08(0.032)Y earsEduc − 0.5(0.2)F emale,(a) Interpret the coefficients on Y earsEduc and F emale. (b) What does the model predict the average daily spending on cigarettes would be for womenwith 12 years of education? (c) Form the 95% confidence interval for the coefficient on F emale. (d) Economists are often interested in estimating production functions of the Cobb-Douglas form(Yiis the ith firm’s output, Liits spending on labour, and Kiits spending on capital):Yi = ALαi Kβi,How might someone estimate α and β from this equation using linear regression?
2. The demand and supply functions for two interdependent goods X and Y are givenbyQDX = 7 − 4PX + 2PYQSX = −6 + 4PX − PYQDY = 1 + PX − PYQSY = −4 − PX + 2PY(a) Find the market equilibrium condition for each good. (b) Express the equilibrium conditions in the matrix form Ax = b.(c) Find the inverse of matrix A. (d) Given your result in part (c), calculate the equilibrium prices. (e) What is the equilibrium quantity for goods X and Y ?
2. A two-sector macro-economic model satisfies the following structural equations:Y = C + I∗C = aY + bwhere 0 < a < 1 and b > 0 are parameters and I∗ denotes investment.(a) What are the exogenous and endogenous variables in this model? (b) Re-arrange this system of equations to express the endogenous variables in terms of the exogenous variables and parameters. (c) Express this system of equations in the matrix form Ax = b. (d) Show that the inverse of matrix A exists.
Chapter 8 Solutions
PRINCIPLES OF MICROECONOMICS (OER)
Ch. 8 - Firms ill a perfectly competitive market are said...Ch. 8 - Would independent trucking fit the characteristics...Ch. 8 - Look at Table 8.13. What would happen to the films...Ch. 8 - Suppose that the market price increases to 6, as...Ch. 8 - Explain in words why a profit-maximizing film will...Ch. 8 - A firms marginal cost curve above the average...Ch. 8 - If new technology in a perfectly competitive...Ch. 8 - A market in perfect competition is in long-run...Ch. 8 - Productive efficiency and allocative efficiency...Ch. 8 - Explain how the profit-maximizing rule of setting...
Ch. 8 - A single firm in a perfectly competitive market is...Ch. 8 - What are the four basic assumptions of perfect...Ch. 8 - What is a price taker firm?Ch. 8 - How does a perfectly competitive firm decide what...Ch. 8 - What prevents a perfectly competitive firm from...Ch. 8 - How does a perfectly competitive film calculate...Ch. 8 - Briefly explain the reason for the shape of a...Ch. 8 - What two rules does a perfectly competitive firm...Ch. 8 - How does the average cost curve help to show...Ch. 8 - What two lines on a cost curve diagram intersect...Ch. 8 - Should a firm shut down immediately if it is...Ch. 8 - How does the average variable cost curve help a...Ch. 8 - What two lines on a cost curve diagram intersect...Ch. 8 - Why does entry occur?Ch. 8 - Why does exit occur?Ch. 8 - Do entry and exit occur in the short run, the long...Ch. 8 - What price will a perfectly competitive firm end...Ch. 8 - Will a perfectly competitive market display...Ch. 8 - Will a perfectly competitive market display...Ch. 8 - Finding a life partner is a complicated process...Ch. 8 - Can you name five examples of perfectly...Ch. 8 - Your company operates in a perfectly competitive...Ch. 8 - Since a perfectly competitive firm can sell as...Ch. 8 - Many films in the United States file for...Ch. 8 - Why will profits for films in a perfectly...Ch. 8 - Why will losses for firms in a perfectly...Ch. 8 - Assuming that the market for cigarettes is in...Ch. 8 - In the argument for why perfect competition is...Ch. 8 - The AAA Aquarium Co. sells aquariums for 20 each....Ch. 8 - Perfectly competitive firm Doggies Paradise Inc....Ch. 8 - A computer company produces affordable,...
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