ECON MACRO (with ECON MACRO Online, 1 term (6 months) Printed Access Card) (New, Engaging Titles from 4LTR Press)
ECON MACRO (with ECON MACRO Online, 1 term (6 months) Printed Access Card) (New, Engaging Titles from 4LTR Press)
5th Edition
ISBN: 9781305659094
Author: William A. McEachern
Publisher: Cengage Learning
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Chapter 9, Problem 5.12P
To determine

Size of the multiplier if investment increases as real GDP increases.

Introduction: An investment multiplier refers to the concept that any increase in public or private investment spending has a more than proportionate positive impact on aggregate income and the general economy. The multiplier attempts to quantify the additional effects of a policy beyond those immediately measurable. The larger an investment's multiplier, the more efficient it is at creating and distributing wealth throughout an economy.

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Problem 3 Simple Bivariate Regression Consider the following bivariate regression model: NAMEUIN Page 1 of 2 = Hourly Wages, Bo+B₁Education; + & where Education measures the years of experience at the job for an individual and Hourly Wage is the hourly wage in dollars. The subscript i indexes various people. You run a bivariate OLS regression to estimate Bo and B₁. Suppose you estimate B = 10 and B a. 0 = 2 How do you interpret the estimates ßo and ß₁ in this context? (3 points) 1 b. Define the terms "predicted/fitted value" and "residual”. (3 points) c. Suppose that for some individual, the predicted value of Hourly Wage is $20, and the residual is 2. What is the actual Hourly wage for the individual? Show your work. (4 points) d. Suppose that some individual has 10 years of Education, and his actual hourly wage is $35. What is the predicted outcome and residual for this individual? Show your work. (5 points)
Problem 1 The Core Model Suppose you are interested in studying the effect of workers' training (measured by the number of training hours) on employee productivity (measured by output per hour). a. What is the dependent and independent variable in this setting? (2 points) b. How would you write this relationship using the Core Model? (3 points) C. Do you expect the slope coefficient ẞ₁, (which shows relation between teacher's experience and test scores) to be positive or negative? Explain your reasoning. (5 points) d. Name any two factors that are likely included in the error term of your model? (5 points)
Problem 2 Endogeneity Suppose you are interested in how social media usage affects students' academic performance. Consider the following model: GPA; = ßo + ß₁Social Media Hours; + ɛ; where GPA, is the grade point average of a student and Social Media Hours; measures how many hours the student spends on social media every week. Each student is denoted by the subscript i. a. What is the dependent variable Y in this setting? What is the independent variable X in this setting? (4 points) b. What does Bo C. What does ẞ1 = 3 mean? (2 points) = 0.2 mean? (3 points) d. What is the condition for the independent variable Social Media Hours; to be endogenous? (5 points) e. Is the independent variable likely to be endogenous? Why or why not? (3 points) f. If yes, describe a scenario where the independent variable is endogenous. (3 points)

Chapter 9 Solutions

ECON MACRO (with ECON MACRO Online, 1 term (6 months) Printed Access Card) (New, Engaging Titles from 4LTR Press)

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