Principles of Macroeconomics 2e
2nd Edition
ISBN: 9781947172388
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 3, Problem 31RQ
What is
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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 3 Solutions
Principles of Macroeconomics 2e
Ch. 3 - Review Figure 3.4. Suppose the price of gasoline...Ch. 3 - Why do economists use the ceteris paribus...Ch. 3 - In an analysis of the market for paint, an...Ch. 3 - Many changes are affecting the market for oil....Ch. 3 - Lets think about the market for air travel. From...Ch. 3 - A tariff is a tax on imported goods. Suppose the...Ch. 3 - What is the effect of a price ceiling on the...Ch. 3 - Does a price ceiling change the equilibrium price?Ch. 3 - What would be the impact of imposing a price flour...Ch. 3 - Does a price ceiling increase the decrease the...
Ch. 3 - If a price floor benefits producers, why does a...Ch. 3 - What determines the level of prices in a market?Ch. 3 - What does a downward-sloping demand curve mean...Ch. 3 - Will demand curves have the same exact shape in...Ch. 3 - Will supply curves have the same shape in all...Ch. 3 - What is the relationship between quantity Demanded...Ch. 3 - How can you locate the equilibrium point on a...Ch. 3 - If the price is above line equilibrium level,...Ch. 3 - When the price is above the equilibrium, explain...Ch. 3 - What is the difference between the demand and the...Ch. 3 - What is the difference between the supply and the...Ch. 3 - When analyzing a market, how do economists deal...Ch. 3 - Name some factors that can cause a shift in line...Ch. 3 - Name some farm that can cause a shift in the...Ch. 3 - How does one analyze a market where both demand...Ch. 3 - What causes a movement along the demand curve?...Ch. 3 - Does a price ceiling attempt to make a price...Ch. 3 - How does a price ceiling set below the equilibrium...Ch. 3 - Does a price floor attempt to make a price higher...Ch. 3 - How does a price floor 521 above the equilibrium...Ch. 3 - What is consumer surplus? How is it illustrated on...Ch. 3 - What is producer surplus? How is it illustrated on...Ch. 3 - What is total surplus? How is it illustrated on a...Ch. 3 - What is the relationship between total surplus and...Ch. 3 - What is deadweight loss?Ch. 3 - Review Figure 3.4. Suppose the government decided...Ch. 3 - Explain why the following statement is false: In...Ch. 3 - Explain why the following statement is false: In...Ch. 3 - Consider the demand for hamburgers. If the price...Ch. 3 - How do you suppose the demographics of an aging...Ch. 3 - We know that a change in the price of a product...Ch. 3 - Suppose there is a soda tax to curb obesity. What...Ch. 3 - Use the four-step process to analyze the impact of...Ch. 3 - Use the four-step process to analyze the impact of...Ch. 3 - Suppose both of these events took place at the...Ch. 3 - Must government policy decisions have winners and...Ch. 3 - Agricultural price supports result in governments...Ch. 3 - Can you propose a policy that meld induce the...Ch. 3 - What term would an economist use to describe what...Ch. 3 - Explain why voluntary Martians improve social...Ch. 3 - Why would a free market mar operate at a quantity...Ch. 3 - Review Figure 3.4 again. Suppose the price of...Ch. 3 - Table 3.8 shows information on the demand and...Ch. 3 - The computer market in recent years has seen many...Ch. 3 - Table 3.9 illustrates the markets demand and...Ch. 3 - Table 3.10 shows the supply and demand for movie...Ch. 3 - A low-income county decides to set a price ceiling...
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- How is the mining industry related to other Canadian labour industries? Choose one other industry, (I chose Forestry)and describe how it is related to the mining industry. How do the two industries work together? Do they ever conflict, or do they work well together?arrow_forwardWhat is the primary, secondary, tertiary, and quaternary levels of mining in Canada For each level, describe what types of careers are the most common, and describe what stage your industry’s main resource is in during that stagearrow_forwardHow does the mining industry in canada contribute to the Canadian economy? Describe why your industry is so important to the Canadian economy What would happen if your industry disappeared, or suffered significant layoffs?arrow_forward
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