4. An economy's Planned Aggregate Expenditure (PAE) is given by the formula PAE = 3,400+ 0.6Y in terms of its autonomous and induced components respectively, where Y represents output. a. State what is meant by the terms autonomous and induced expenditure b. Given that, under Keynes, the economy is in short term equilibrium where Y=PAE, find the numerical level of short-run output using the above equation. c. If potential output in the same economy is 9,000 draw a Keynesian Cross diagram and label any gap which exists between actual and potential output.

4. An economy's Planned Aggregate Expenditure (PAE) is given by the formula PAE = 3,400+ 0.6Y in terms of its autonomous and induced components respectively, where Y represents output. a. State what is meant by the terms autonomous and induced expenditure b. Given that, under Keynes, the economy is in short term equilibrium where Y=PAE, find the numerical level of short-run output using the above equation. c. If potential output in the same economy is 9,000 draw a Keynesian Cross diagram and label any gap which exists between actual and potential output.

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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A. Suppose you are given the following fixed-price Keynesian model: C=280 + 0.9Y. I-200 G=100 X3D200 M= 100 + 0.1Y. T= 100 a. Find the aggregate expenditure function. b. Find the equilibrium level of real GDP. C. What is the spending multiolier in this model? Tax multiplier? d. Show that leakages injections at equilibrium. e. If taxes increase by $100, what is the new equilibrium level of GDP? E. Show your answers to b) and e) graphically.
The Life-Cycle/Permanent Income Model of Consumption makes a different prediction from the Keynesian Model, about how Consumption reacts to an increase in current income. Which of the following is the best description of the difference? O In the Keynesian Model, consumers will increasktheir spending by the mpc times the increase in income. In the Life-Cycle/Permanent Income Model, consumers will not increase their spending by much unless they believe that the increase in their income is permanent. O In the Life-Cycle/Permanent Income Model, consumers will increase their spending by the mpc times the increase in income. In the Keynesian Model, consumers will only increase their spending if they believe that the increase in their income is temporary. O In the Keynesian Model, consumers will increase their spending by the mpc times the increase in income. In the Life-Cycle/Permanent Income Model, consumers will only increase their spending if they believe that the increase in their income…
Derive the consumption function and use this relation in the aggregate demand function to derivean equation for the equilibrium in the goods market . Why the AD line is upward sloping?Suppose the government spending falls by 100 and in this case marginal propensity to consumeis 0.8. what is the value of change in output. Draw a diagram to show the shift in AD line due tothis change in government spending and output.
The graph gives an economy's AE curve when the economy is in long-run equilibrium. Equilibrium expenditure is $12 trillion. Draw a new AE curve that shows the effect of an increase in investment. Label it AE₁. Draw a point at the new equilibrium expenditure. Label it B. Draw another AE curve that shows equilibrium expenditure in the short run. Label it AE2. Draw a point at the short-run equilibrium. Label it C. Finally, draw the AE curve when the economy returns to long-run equilibrium. Label it AE3. 16 14- 12- 10- 10 Aggregate expenditure (trillions of 2009 dollars) A 45 degree line 11 12 13 14 Real GDP (trillions of 2009 dollars) Click the graph, choose a tool in the palette and follow the instructions to create your graph. 15 AE 16 17
The Keynesian cross 45 degree line represents: Every point where aggregate expenditure is equal to real GDP O The points where aggregate expenditure is greater than real GDP The points where Keynes believed that aggregate expenditure should be O The points where aggregate expenditure is less than real GDP
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Use the following consumption function data to anwser the question bellow: Real disposable income consumption savings aMpc MPS
Suppose the aggregate consumption function is represented by C = £1,000 + 0.5*YD, where YD is disposable income, and there are no taxes or transfers. Using the income-expenditure model, what increase in autonomous consumption must occur for equilibrium output to increase by £1,000? Select one: a. £200 b. £500 c. £100 d. £250
2. For simplicity, we normally treat aggregate tax payments (T) as determined by politics or other factors unrelated to output. However, suppose that aggregate tax payments are proportional to income. That is, T=t·Y, where tis the marginal tax rate and is between o and 1. a. How, if at all, would this change in our assumptions affect the Keynesian cross diagram? b. Would this change increase, decrease, or have no impact on the multiplier effect, or is it not possible to tell? (That is, how would the effect of a given vertical shift of the planned expenditure line compare with what it was before?)
Which of the following sets of variable changes will all cause the IS Curve to shift to the right? A. A decrease in autonomous consumption, a decrease in government spending and an increase in financial friction. B. An increase in autonomous consumption, an increase in government spending and a decrease in financial friction. OC. An increase in autonomous consumption, a decrease in government spending and an increase in financial friction. D. A decrease in autonomous consumption, an increase in government spending and an increase in financial friction.
The graph gives an economy's AE curve when the economy is in long-run equilibrium. Equilibrium expenditure is $12 trillion. Draw a new AE curve that shows the effect of an increase in investment. Label it AE₁. Draw a point at the new equilibrium expenditure. Label it B. Draw another AE curve that shows equilibrium expenditure in the short run. Label it AE2. Draw a point at the short-run equilibrium. Label it C. Finally, draw the AE curve when the economy returns to long-run equilibrium. Label it AE3. 16- 14- 12- 10- Aggregate expenditure (trillions of 2012 dollars) 10 A 45 degree line AEO 15 11 12 13 14 Real GDP (trillions of 2012 dollars) >>> Draw only the objects specified in the question. 16
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