Principles of Economics 2e
Principles of Economics 2e
2nd Edition
ISBN: 9781947172364
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
Textbook Question
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Chapter 8, Problem 10SCQ

Explain how the profit-maximizing rule of setting P = MC leads a perfectly competitive market to be allocatively efficient.

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Difference-in-Difference In the beginning of 2001, North Dakota legalized fireworks. Suppose you are interested in studying the effect of the legalizing of fireworks on the number of house fires in North Dakota. Unlike North Dakota, South Dakota did not legalize fireworks and continued to ban them. You decide to use a Difference-in-difference (DID) Model. The numbers of house fires in each state at the end of 2000 and 2001 are as follows: Number of house fires in Number of house fires in Year North Dakota 2000 2001 35 50 South Dakota 54 64 a. What is the change in the outcome for the treatment group between 2000 and 2001? Show your working for full credit. (10 points) b. Can we interpret the change in the outcome for the treatment group between 2000 and 2001 as the causal effect of legalizing fireworks on number of house fires? Explain your answer. (10 points)
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Chapter 8 Solutions

Principles of Economics 2e

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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