ECON MACRO
ECON MACRO
5th Edition
ISBN: 9781337430401
Author: William A. McEachern
Publisher: Cengage Limited
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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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Which of the following statements best describes the multiplier effect in economics? A. The process of reducing government spending to stimulate economic growth. B. An increase in consumer saving when government expenditure decreases. c. A phenomenon where an initial increase in spending leads to a more significant overall increase in economic output. D. The concept of a fixed relationship between inflation and unemployment rates.
The following are exogenous (not directly affected by income): G = 11 I = 4 X = M = 0 The consumption function is: C = k + cY, where k = 3, c = 0.8 What is the equilibrium level of GDP?  What is the multiplier?
Consider an economy described by the following equations. Y= C + I + GC= 100 + .75 (Y - T)I= 500 - 50rG= 125T= 100 Where: Y is GDP, C is consumption, I is investment, G is government spending, T is taxes and r is the rate of interest. Answer the questions based on the following equations above. a. What is the value of the multiplier? b. What is the equilibrium equation for Y? Show your solution. c. Suppose the Central Bank policy is to adjust the money supply to maintain the interest rate at 4 percent, so r=4. What is the value of output? Show your solution. d. Assuming that no change in fiscal policy, what is the effect of a reduction in interest rate from 4 percent to 3 percent on equilibrium output. Show your solution. e. In this case, explain the policy that was used by the policymaker to target the aggregate demand.
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