Principles of Economics 2e
2nd Edition
ISBN: 9781947172364
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 29, Problem 2SCQ
Suppose that political unrest in Egypt leads financial markets to anticipate a
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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)
C.
Regression Discontinuity
Birth weight is used as a common sign for a newborn's health. In the United States, if a baby
has a birthweight below 1500 grams, the newborn is classified as having “very low birth
weight". Suppose you want to study the effect of having very low birth weight on the number
of hospital visits made before the baby's first birthday. You decide to use Regression
Discontinuity to answer this question. The graph below shows the RD model:
Number of hospital visits made before baby's first birthday
5
1400
1450
1500
1550
1600
Birthweight (in grams)
a. What is the running variable? (5 points)
b. What is the cutoff? (5 points)
T
What is the discontinuity in the graph and how do you interpret it? (10 points)
C.
Regression Discontinuity
Birth weight is used as a common sign for a newborn's health. In the United States, if a baby
has a birthweight below 1500 grams, the newborn is classified as having “very low birth
weight". Suppose you want to study the effect of having very low birth weight on the number
of hospital visits made before the baby's first birthday. You decide to use Regression
Discontinuity to answer this question. The graph below shows the RD model:
Number of hospital visits made before baby's first birthday
5
1400
1450
1500
1550
1600
Birthweight (in grams)
a. What is the running variable? (5 points)
b. What is the cutoff? (5 points)
T
What is the discontinuity in the graph and how do you interpret it? (10 points)
Chapter 29 Solutions
Principles of Economics 2e
Ch. 29 - How will a stronger euro affect the following...Ch. 29 - Suppose that political unrest in Egypt leads...Ch. 29 - Suppose U.S. interest rates decline compared to...Ch. 29 - Suppose Argentina gets inflation under control and...Ch. 29 - This chapter has explained that one of the most...Ch. 29 - A booming economy can attract financial capital...Ch. 29 - How would a contractionary monetary policy affect...Ch. 29 - A central bank can allow its currency to fall...Ch. 29 - Is a country for which imports and exports...Ch. 29 - What is the foreign exchange market?
Ch. 29 - Describe some buyers and some sellers in the...Ch. 29 - What is the difference between foreign direct...Ch. 29 - What does it mean to hedge a financial...Ch. 29 - What does it mean to say that a currency...Ch. 29 - Does an expectation of a stronger exchange rate in...Ch. 29 - Does a higher rate of return in a nations economy,...Ch. 29 - Does a higher inflation rate in an economy, other...Ch. 29 - What is the purchasing power parity exchange rate?Ch. 29 - What are some of the reasons a central bank is...Ch. 29 - How can an unexpected fall in exchange rates...Ch. 29 - What is the difference between a floating exchange...Ch. 29 - List some advantages and disadvantages of the...Ch. 29 - Why would a nation dollarize—that is, adopt...Ch. 29 - Can you think of any major disadvantages to...Ch. 29 - If a countrys currency is expected to appreciate...Ch. 29 - Do you think that a country experiencing...Ch. 29 - Suppose a country has an overall balance of trade...Ch. 29 - We learned that changes in exchange rates and the...Ch. 29 - If a developing country needs foreign capital...Ch. 29 - Many developing countries, like Mexico, have...Ch. 29 - What would make a country decide to change from a...Ch. 29 - A British pound cost 2.00 in U.S. dollars in 2008,...
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