9. In the IS model, aggregate consumption is given by C = ā¿Ỹ + x(Y− Ỹ) where x denotes the marginal propensity to consume out of current income. A one dollar increase in government purchases leads to a dollar increase in GDP. a. x/(1-x) 1/(1-x) b. d. e. x/(1+x) 1/(1+x)
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- Table 2 shows elements in the national income accounts of an economy. Assume the economy is currently in equilibrium. Elements £ billions Consumption (total) 80 Investment 9 Government Expenditure 6 Imports 15 Exports 8 What is the current equilibrium level of income? What is the level of injections? What is the level of withdrawals? If national income now rises by £22 billion and as a result, the consumption of domestically produced goods rises to £80 billion. Calculate the marginal propensity to consume (MPC)What is the value of the multiplier? What is the value of the multiplier? Comment on the results in part (3) and (4).The graph models an economy in equilibrium with a real GDP of $180 billion. Suppose that consumers' expectations about future incomes change, causing unplanned inventory investment to increase by $30 billion. Shift the planned aggregate expenditure (AE) line to show the effect of this change. *Image* 1) This change will cause the equilibrium level of real GDP to a) decrease. b) remain unchanged. c) increase. 2) By how much will GDP change once the new equilibrium is reached? If GDP will decrease, be sure to include a negative sign. GDP change: $ ________ billionMacroeconomics Question No.2 Suppose the consumption function is given by C = 100 + 0.8YD and that I = 50, while G=200, TR=62.5 and t=0.25. What is the equilibrium level of income? What is the level of saving in equilibrium? If investment were to rise to 150, what would be the effect be on equilibrium income. What is the value of multiplier in part a. and c. Draw a diagram indicating the equilibrium in part a. and c.
- Due to some negative news concerning the impact of global warming on the economy, consumers are becoming more pessimistic about the future to the point of reducing autonomous consumption by 50. What is the immediate impact on income before the economy adjusts to its new equilibrium? What are the economy’s equilibrium level of output Y and interest rate r following the fall in autonomous consumption? Compute the equilibrium level of consumption and investment spending. With the help of the IS/LM graph, carefully explain what happens to the economy following the fall in consumer confidence.Draw and interpret a “Keynsian cross” graph for the following situations. See the model in ch. 12. (Each can be analyzed independently of the other, so separate graphs for each part). briefly interpret by answering: Which component of aggregate expenditure (AE) shifted? Why? How did that shift the AE curve? What happens the economy’s output and income? For the latter, use the concept of changes in inventory and interpret the graph. Sign your graph and include the picture. a) The stock market reaches another all-time high. Consumers are wealthier and businesses are feeling confident. b) The Federal Reserve decides to end the record low interest rate environment and increases rates across the term structure by 200 basis points.Determine aggregate expenditures (AE) in this economy when real GDP (Y) is equal to $1,500 billion, $2,000 billion, and $2,500 billion.When Y = $1,500 billion, AE = billion .When Y = $2,000 billion, AE = billion . When Y = $2,500 billion, AE = billion .
- 1.The following graphs show an economy's initial position at point B along its consumption function CFCF. Suppose disposable income suddenly and unexpectedly decreases. On the graph, shift either the CF curve or the initial point on the CF curve to show the impact of a fall in disposable income. 2.Now suppose that tensions in the Middle East lead to a rapid increase in the price of oil, which raises the general price level. On the following graph, shift either the CF curve or the initial point on the CF curve to show the impact of a rise in the price level.THE AGGREGATE EXPENDITURE MODEL (IN THE SHORT RUN)YOU MUST SHOW YOUR CALCULATIONS IN THE SPACE BELOWFOR THE NEXT PROBLEM USE THE FOLLOWING FORMULA:CHANGE IN GDP = [ 1 / (1-MPC) ] * CHANGE IN GInitially, the economy is producing $13 trillion in goods and services and the government is spending $2 trillion.Then the government decides to increase its spending to $2.7 trillion. Compute the new equilibrium level of output. Assume that the marginal propensity to consume is 0.7 (MPC=0.7).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.
- 1. Interpret what it means if MPC equals 0.95? 2. If your MPC is 0.9 and your income falls by $200, what will be your change in spending? 3. For each of the following determine whether there is movement along a consumption schedule (function), or a shift of the schedule. If there is a shift then indicate the direction of the shift and interpret that shift. a. Consumer’s expectations became more optimistic. b. An increase in the interest rate. c. There is a current low level of consumer durables on hand. d. Consumer incomes rise.From the information below calculate aggregate demand; Consumption (C) = $200 + 0.6Y Investment (I) = $300 Government (G) = $100 Net Export (NX) = $50 Which one of the following statements about Consumption and Aggregate Demand is CORRECT when the economy achieves equilibrium GDP? a. One is 350 greater than the other b. One comprises the other c. They are valued at $1025 and $1375, respectively d. They are valued at $1375 and $1025, respectively e. They are both the sameConsider the economy of XYZ, has the following indicators in the table below:Ct = 0.7Yt̅Gt = 0.2Yt̅EXt = 0.20Yt̅IMt = 0.25Yt̅It = 0.30 − 2.0(Rt − 1.2)Yt̅A. Derive the IS equation. Explain why the IS curve has downward slope.B. Estimate the short-run output when real interest rate equals to 2 percent.C. Calculate the value of multiplier and interpret the result.D. Suppose the government increases the expenditure such as:Gt = 0.3Yt̅Show the impact on IS curve in graphically, and calculate the government expenditure multiplier.How much short-run output change? Explain the reason.