PRINCIPLES OF MACROECONOMICS (LL)W/ACC.
7th Edition
ISBN: 9781264088980
Author: Frank
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 13, Problem 13.2CC
To determine
Explain graphically the determination of short-run equilibrium output for the economy.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Recall the Keynesian Cross is the foundation to derive the IS curve. Suppose we have a simple closed economy. The cross of planned expenditure (PE) and the equilibrium condition (PE = Y) of this economy shows the equilibrium level of national output in the goods market. Here we assume the consumption (C) is a function of • C = 120 + 0.75(Y-T); Here the marginal propensity to consume (MPC) equals 0.75. Planned investment (I) is 200; government purchases (G) and taxes (T) are both 400. Use the conditions given, finish the following questions.
(1) What is the equilibrium level of national income? Show step-by-step solution. Tip: recall the definition of planned expenditure (PE). At equilibrium, actual expenditure (Y) equals planned expenditure.
(2) If government expenditures increase to 500, ceteris paribus (other things being equal), what is the new equilibrium income? What is the multiplier for government purchases? How much is the change of national income from the increase in…
Explain
The Simple Keynesian Model (i.e., the income-expenditure model).
Assume: C = 150 + 0.9 DI
I = 50
DI = C + I in equilibrium for a 2-sector model
(Note: DI = C in a 1-sector model)
Define the term, consumption.
What is the value of “autonomous” consumption (also called “a” or the vertical intercept)?
What is the value of the slope (also referred to as “b”) of the consumption function?
There’s another name for the slope of the consumption function. What is it?
What is the value of DI when the model is in equilibrium?
What is the value of the “oversimplified” expenditure multiplier?
If full-employment means that DI = $5000, then how much should autonomous consumption (or autonomous investment) increase to achieve full-employment? (Hint: Use the multiplier process formula.)
Draw a graph of this 2-sector model. Indicate equilibrium DI, full-employment DI, as well as…
Chapter 13 Solutions
PRINCIPLES OF MACROECONOMICS (LL)W/ACC.
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, economics and related others by exploring similar questions and additional content below.Similar questions
- Q.1.7 In the Keynesian macroeconomic model, the equation for the savings function is given as: S = -420 + 1/4Y. Based on this information, which of the following statements is correct? (1) The marginal propensity to consume is 1/4; (2) The marginal propensity to save is -420;arrow_forwardIn the Keynesian model, is aggregate expenditure (AE) exceeds total production an unintended _________ will occur and business will __________. a) inventory reduction; increase production b) inventory reduction; decrease production c) inventory reduction; not change production d) inventory accumulation; decrease production e) inventory accumulation; increase productionarrow_forwardThe figure to the right shows an economy in an initial long-run equilibrium at point A a. Using the line drawing tool, show how, if at all, the equilibrium real GDP and the long-run equilibrium price level are affected by an income tax rebate (the return of previously paid taxes) from the government to households, which they can apply only to purchases of goods and services. Properly label this line. Carefully follow the instructions above, and only draw the required objects b. According to your graph, the equilibrium price level here to search O while the equilibrium real GDP ▼arrow_forward
- Use the Keynesian cross model to predict the impact of an increase in government purchases on equilibrium GDP. State the direction of the change and give a formula for the size of the impact. An increase in taxes shifts the planned expenditure function downward. The change in income is given by AY= ΔΥ= -MPC 1-MPC An increase taxes shifts the planned expenditure function upward. The change in income is given by -MPC 1-MPC AY= XAT An increase in taxes shifts the planned expenditure function inward. The change in income is given by AY= 1 1-MPC XAT 1 1-MPC The direction of the shift is undetermined without knowing the slope of the PE function. The change in income is given by XAT XATarrow_forwardThe Aggregate Expenditure Model is traditionally called the” Keynesian Cross”. Use the Aggregate Expenditure Keynesian Cross diagram to show what happens to the economy under the following conditions: (Note that is different from the AS-AD Model.) What happens in the model if government expenditures are increased (G↑)? What happens if taxes are raised (T↑)? What happens to the US economy if the rest of the world experiences economic growth and imports more US goods (X↑)?arrow_forwardConsider the graphical representation of the Keynesian cross for a hypothetical country, where the planned aggregate spending line is graphed against the 45° line. Suppose that, in this country, there is an autonomous increase in aggregate spending of $20 billion. Show this change on the graph.arrow_forward
- Consider the impact of thriftiness in the Keynesian Cross Model. Suppose the consumption function is C=C¯+c(Y−T¯) where C¯ is called autonomous consumption and cc is the marginal propensity to consume. a) What happens to equilibrium income when society becomes more thrifty (i.e., a decline in C¯) b) Your answer to (a) is called the Paradox of Thrift. Explain why consuming less (and saving more) is not a good thing in this model. (Hint: a decrease in consumption wouldn’t be so bad in our classical model of Chapter 3 because we assumed national savings equaled investment in the long run.)arrow_forwardThis question considers the impact of a tax decrease in the AD-AS framework. The figure depicts an economy in which output equals potential. Suppose that the government gives households a tax rebate. 1.) Using the line drawing tool, draw the short-run effect of the government giving households a tax rebate. Properly label this line. 2.) Using the point drawing tool, plot the new short-run equilibrium. Label this point 'e₁'. Carefully follow the instructions above and only draw the required objects. Price Level LRASO eo Real GDP, Y ($, Trillions) SRASO ADO Select Line Pointarrow_forwardplease answer in text form and in proper format answer with must explanation , calculation for each part and steps clearlyarrow_forward
- Suppose the economy's short-run aggregate supply (AS) curve is given by the following equation: Quantity of Output Supplied = Natural Level of Output + a x (Price LevelActuat Price LevelExpecte The Greek letter a represents a number that determines how much output responds to unexpected changes in the price level. In this case, assume that a = $2 billion. That is, when the actual price level exceeds the expected price level by 1, the quantity of output supplied will exceed the natural level of output by $2 billion. Suppose the natural level of output is $50 billion of real GDP and that people expect a price level of 105. On the following graph, use the purple line (diamond symbol) to plot this economy's long-run aggregate supply (LRAS) curve. Then use the orange line segments (square symbol) to plot the economy's short-run aggregate supply (AS) curve at each of the following price levels: 95, 100, 105, 110, and 115. ? 125 120 AS 115 110 105 LRAS 100 95 90 85 80 75 10 20 30 40 50 60 70…arrow_forwardFor the following economy, find autonomous expenditure, the multiplier, short-run equilibrium output, and the output gap. By how much would autonomous expenditure have to change to eliminate the output gap? C = 550 + 0.75 (Y – T ) I p = 200 G = 200 NX = 60 T = 180 Y* = 3,400 Instructions: Enter your responses as absolute numbers. Autonomous expenditure: 875Multiplier: 4Short-run equilibrium output: 3500 There is (Click to select) an expansionary output gap in the amount of 100.(DO THIS PART) Autonomous expenditure would need to decrease by________ to eliminate the output gap.arrow_forwardQuestion Two a) Use the Keynesian Cross to derive the IS curvearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Economics (MindTap Course List)EconomicsISBN:9781337617383Author:Roger A. ArnoldPublisher:Cengage Learning
Economics (MindTap Course List)
Economics
ISBN:9781337617383
Author:Roger A. Arnold
Publisher:Cengage Learning