Consider a Keynesian model of the economy with the following equations: C = 300 + 0.8Yd = 500 = 250 %3D = 400 = 200 = 150 M = 0.3Y The equilibrium level of income is €2,720 €2,500 €1,500 £1 250
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- 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; (3) At an income level of R1 000, the value of savings is 250;(4) At an income level of R1 000, the level of savings is -170.1. Consider the following simple Keynesian model, (i) Rewrite the model into matrix form with Y, C and I as endogenous variables and Go and i as exogenous variables. (The coefficient matrix must be a 3 by 3 matrix.) Y=C+I+Go C = 200+ 0.8Y I= 1000-2000 (ii) Compute the equilibria Y*, C* and I* as functions of Go and i using Cramer's rule. 8Y* (iii) Find and di ƏY* ƏGo (iv) Give an economic interpretation of national income? ƏY* " ƏGo what should the government do if it wants to raiseQ.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;
- a) Given the following simple Keynesian Model: Y = C + I + G + X-M, where Consumption schedule is given as C= 100 +0.75Y Investment (I) = 50 Government (G) = 100 and Net Export (X-M) = 20 i. Calculate the Equlibrium Level of Income ii. Calculate the size of Consumption at the Equilibrium LevelThe Keynesian multiplier relationship Y = 1/ (1-c) is derived from two initial equations: Y = C + I and C= cY. For the multiplier relationship to be acceptable, a. the initial two equations must be acceptable b. saving must be negative c. the algebraic derivation must be correct d. all individuals must receive the same incomeA4. In the Keynesian cross model, if the interest rate is constant and the MPC is 0.3, then the government purchases multiplier is A.0.3 B.0.7 C.1.4 D.3.3
- According to the Keynesian cross model if the marginal propensity to consume is 2/3, cut in taxes of 120 Billion increases equilibrium income by a) 160 Billion b) 180 Billion C) 240 Billion d) 360 BillionWhich of the following statements about the Keynesian framework are accurate? a)Keynes posited a linear Consumption function C=Ca + mpcYd, where C is total desired consumption spending, Ca is consumption spending independent of income and Yd is disposable income and mpc is marginal propensity to consume b) In the C=Ca +mpcYd the Ca is the vertical axis intercept parameter, and mpc is the slope parameter. c) Keynes also posited that Investment spending was a function of expectations and the interest rate. d) In the Keynesian investment function the firm's estimated profitability of potential investment projects were determined by expectations of future sales and costs. e) Businesses would invest in those projects whose estimated profitability was greater than the market rate of interest. f) If the firms don't have the cash, they will borrow funds and earn the difference between the rate of return on the project and the lower market rate of interest. If they have more cash than needed…If the Keynesian consumption function is C = 100 +0.75Y4 and there is no investment then, when disposable income is 500, what is the average propensity to consume? Round your answer to 2 decimal places e.g. 2.22
- Given the fllowing simple ky Given the fellawing simple keynesian income medels; C = 200+ 0-TY O Express the model in matrix form. O Using metrix dgebra, find ite equilibrium stalve of c Y and I 9 Suppose that autonomous invertment increases from 7S to 120, ohat is the resultant change in the equilibrium values of C4 and I"10 . In the “complete Keynesian model”, the investment functions was I = I0 - f(i). An analyst now proposes the following investment function: I = I0 - f(i) + qY, where “q” is a parameter and Y is national income = GDP. Provide two different arguments, i.e. explanations as to why this investment function makes sense. The focus is on the new term, qY (q times Y), in the function.In the Keynesian-cross model, if the MPC equals 0.75, then a $3 billion decrease in taxes increases planned expenditures by and increases the equilibrium level of income by $3 billion; $9 billion $2.25 billion; $9 billion $2.25 billion; $2.25 billion $3 billion; $3 billion
