Principles of Macroeconomics 2e
2nd Edition
ISBN: 9781947172388
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 10, Problem 40CTQ
What is more important, a country’s current account balance or GDP growth? Why?
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QUESTION 2
[20]
2.1 Body Mass Index (BMI) is a summary measure of relative health. It is calculated by dividing an
individual's weight (in kilograms) by the square of their height (in meters).
A small sample was drawn from the population of UWC students to determine the effect of exercise
on BMI score. Given the following table, find the constant and slope parameters of the sample
regression function of BMI = f(Weekly exercise hours). Interpret the two estimated parameter
values.
X (Weekly exercise hours) Y (Body-Mass index)
QUESTION 3
2
4
6
8
10
12
41
38
33
27
23
19
Derek investigates the relationship between the days (per year) absent from work (ABSENT) and the
number of years taken for the worker to be promoted (PROMOTION). He interviewed a sample of 22
employees in Cape Town to obtain information on ABSENT (X) and PROMOTION (Y), and derived
the following:
ΣΧ
ΣΥ
341
ΣΧΥ
176 ΣΧ
1187
1012
3.1 By using the OLS method, prove that the constant and slope parameters of the…
QUESTION 2
2.1
[30]
Mariana, a researcher at the World Health Organisation (WHO), collects information
on weekly study hours (HOURS) and blood pressure level when writing a test
(BLOOD) from a sample of university students across the country, before running the
regression BLOOD = f(STUDY). She collects data from 5 students as listed below:
X (STUDY)
2
Y (BLOOD)
4
6
8
10
141
138
133
127
123
2.1.1 By using the OLS method and the information above derive the values for parameters
B1 and B2.
2.1.2 Derive the RSS (sum of squares for the residuals).
2.1.3 Hence, calculate ô
2.2
2.3
(6)
(3)
Further, she replicates her study and collects data from 122 students from a rival
university. She derives the residuals followed by computing skewness (S) equals -1.25
and kurtosis (K) equals 8.25 for the rival university data. Conduct the Jacque-Bera test
of normality at a = 0.05.
(5)
Upon tasked with deriving estimates of ẞ1, B2, 82 and the standard errors (SE) of ẞ1
and B₂ for the replicated data.…
If you were put in charge of ensuring that the mining industry in canada becomes more sustainable over the course of the next decade (2025-2035), how would you approach this? Come up with (at least) one resolution for each of the 4 major types of conflict: social, environmental, economic, and political
Chapter 10 Solutions
Principles of Macroeconomics 2e
Ch. 10 - If foreign investors buy more U.S. stocks and...Ch. 10 - If the trade deficit of the United States...Ch. 10 - State whether each of the following events...Ch. 10 - In what way does comparing a countrys exports to...Ch. 10 - At one point Canadas GDP was 1,800 billion and its...Ch. 10 - The GDP for the United States is 18,036 billion...Ch. 10 - Why does the trade balance and the current account...Ch. 10 - State whether each of the following events...Ch. 10 - How does the bottom portion of Figure 23.3,...Ch. 10 - Explain the relationship between a current account...
Ch. 10 - Using the national savings and Investment...Ch. 10 - If a country is running a government budget...Ch. 10 - What determines the size of a countrys trade...Ch. 10 - If domestic Investment increases, and there is no...Ch. 10 - Why does a recession cause a trade deficit to...Ch. 10 - Both the United States and global economies are...Ch. 10 - For each of the following, indicate which type of...Ch. 10 - How did large trade deficits hurt the East Asian...Ch. 10 - Describe a scenario in which a trade surplus...Ch. 10 - The United States exports 14 of GDP while Germany...Ch. 10 - Explain briefly whether each of the following...Ch. 10 - If imports exceed exports, is it a trade deficit...Ch. 10 - What is included in the current account balance?Ch. 10 - In recent decades, has the U.S. trade balance...Ch. 10 - Does a trade surplus mean an overall inflow of...Ch. 10 - What are the two main sides of the national...Ch. 10 - What are the main components of the national...Ch. 10 - When is a trade deficit likely to work out well...Ch. 10 - Does a trade surplus help to guarantee strong...Ch. 10 - What three factors will determine whether a nation...Ch. 10 - What is the difference between trade deficits and...Ch. 10 - Occasionally, a government official will argue...Ch. 10 - A government official announces a new policy. The...Ch. 10 - If a country is a big exporter, is it more exposed...Ch. 10 - If countries reduced trade barriers, would the...Ch. 10 - Is it better for your country to be an...Ch. 10 - Many think that the size of a trade deficit is due...Ch. 10 - If you observed a country with a rapidly growing...Ch. 10 - Occasionally, a government official will argue...Ch. 10 - What is more important, a countrys current account...Ch. 10 - Will nations that are more involved in foreign...Ch. 10 - Some economists warn that the persistent trade...Ch. 10 - In 2001, the United Kingdoms economy exported...Ch. 10 - Imagine that the U.S. economy finds itself in the...Ch. 10 - Table 23.7 provides some hypothetical data on...Ch. 10 - Imagine that the economy of Germany finds itself...
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