Principles of Economics 2e
2nd Edition
ISBN: 9781947172364
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 34, Problem 16SCQ
Why would countries promote protectionist laws, while also negotiate for freer trade internationally?
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Problem 3
Stata Output Analysis
Suppose a study investigates the causal effect of education on wages.
Table 1 reports the results of an OLS regression of wages (wage per hour in dollars) on
education (years in education).
Table 1
Source
SS
df
MS
Number of obs
=
3,017
F(1, 3015)
=
298.39
Model
Residual
18904467
191011981
1
18904467
3,015 63353.8909
Prob > F
0.0000
R-squared
0.0901
Adj R-squared
0.0898
Total
209916448
3,016 69600.9444
Root MSE
251.7
wage
Coef. Std. Err.
t
P>|t|
[95% Conf. Interval]
education
cons
29.56644
183.9342
1.711605
23.15976
17.27 0.000
7.94 0.000
26.21041
138.5237
32.92247
229.3447
a. How would you write this relationship using the Core Model? (5 points)
b. What is the value for B₁, the coefficient on Education? (2 points)
C. What is the standard error of ẞ₁? (2 points)
d. What is the R squared for the model? (2 points)
e. What is the t statistic for ₁at the 5% level of significance? (2 points)
Λ
f. What is the 95% confidence interval for B₁? (2 points)
Λ
g.…
Problem 2
Hypothesis Testing
Suppose you are interested in the effect of neighborhood crime incidents on high school
graduation rates. You run the following regression model:
Graduation; ßo+ß₁Crime; +ɛ¿
=
You would like to test whether the neighborhood crime incidents have a statistically
significant effect on high school graduation rate at the 5% level of significance (α = 0.05).
You estimate the model and find that B₁ = -0.04 and se (B₁) = 0.008.
a. Write down the null hypothesis and alternative hypothesis. (4 points)
b. Calculate thet statistic of B₁. (5 points)
C. What is the critical value of thet statistic for the 5% level of significance? (2
points)
d. Calculate the 95% confidence interval for the coefficient on Crime? (6 points)
e. Based on your answers to the questions b, c, and d, do you reject or fail to reject the
null hypothesis you defined in question a? Justify your answer. (5 points)
Λ
f. Isẞ₁ statistically significant at the 5% level? (3 points)
Problem 1
Endogeneity & Bias
The ACT (an abbreviation of American College Testing) is a standardized test used for college
admissions in the United States.
Suppose you are interested in whether ACT preparation improves ACT scores. Consider the
following model:
ACT=B+B Preparation,+e;
where Preparation measures the number of hours spent on ACT preparation and ACT is
ACT scores. Each student is denoted by the subscript i.
Suppose you estimate = - 21 andß₁
= 0.9.
a. What is the dependent variable? What is the independent variable? (3 points)
b. How do you interpret ẞ = 21 in this context? (4 points)
0
C.
How do you interpretß₁ = 0.9 in this context? (4 points)
1
d. Describe a scenario which can cause the independent variable to be endogenous. (4
points)
Chapter 34 Solutions
Principles of Economics 2e
Ch. 34 - Explain how a tariff reduction causes an Increase...Ch. 34 - Explain how a subsidy on agricultural goods like...Ch. 34 - Explain how trade barriers save jobs in protected...Ch. 34 - Explain how trade barriers raise wages in...Ch. 34 - How does international trade affect working...Ch. 34 - Do the jobs for workers in low-income countries...Ch. 34 - How do trade barriers affect the average Income...Ch. 34 - How does the cost of saving jobs in protected...Ch. 34 - Explain how predatory pricing could be a...Ch. 34 - Why do low-income countries like Brazil, Egypt, or...
Ch. 34 - Explain the logic behind the race to the bottom...Ch. 34 - What are the conditions under which a country may...Ch. 34 - Why is the national security argument not...Ch. 34 - Assume a perfectly competitive market and the...Ch. 34 - What is the difference between a free trade...Ch. 34 - Why would countries promote protectionist laws,...Ch. 34 - What might account for the dramatic increase in...Ch. 34 - How does competition, whether domestic or foreign,...Ch. 34 - What are the gains from competition?Ch. 34 - Who does protectionism protect? From what does it...Ch. 34 - Name and define three policy tools for enacting...Ch. 34 - How does protectionism affect the price of the...Ch. 34 - Does international trade, taken as a whole,...Ch. 34 - Is international trade likely to have roughly the...Ch. 34 - How is international trade, taken as a whole,...Ch. 34 - Is international trade likely to have about the...Ch. 34 - What are main reasons for protecting infant...Ch. 34 - What is dumping? Why does prohibiting it often...Ch. 34 - What is the race to the bottom scenario?Ch. 34 - Do the rules of international trade require that...Ch. 34 - What is the national interest argument for...Ch. 34 - Name several of the international treaties where...Ch. 34 - What is the general trend of trade barriers over...Ch. 34 - If opening up to free trade would benefit a...Ch. 34 - Who gains and who loses from trade?Ch. 34 - Why is trade a good thing if some people lose?Ch. 34 - What are some ways that governments can help...Ch. 34 - Show graphically that for any tariff, there is an...Ch. 34 - From the Work It Out Effects of Trade Barriers,...Ch. 34 - If trade barriers hurt the average worker in an...Ch. 34 - Why do you think labor standards and working...Ch. 34 - How would direct subsidies to key industries be...Ch. 34 - How can governments identify good candidates for...Ch. 34 - Microeconomic theory argues that it is...Ch. 34 - How do you think Americans would feel if other...Ch. 34 - Is it legitimate to impose higher safety standards...Ch. 34 - Why might the unsafe consumer products argument be...Ch. 34 - Why might a tax on domestic consumption of...Ch. 34 - Why do you think that the GAIT rounds and, more...Ch. 34 - An economic union requires giving up some...Ch. 34 - What are some examples of innovative products that...Ch. 34 - In principle, the benefits of international trade...Ch. 34 - Economists sometimes say that protectionism is the...Ch. 34 - Trade has income distribution effects. For...Ch. 34 - Assume two countries, Thailand (T) and Japan (J),...Ch. 34 - You have just been put in charge of trade policy...Ch. 34 - The country of Pepperland exports steel to the...
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