Given a hypothetical consumption function of the form
Y = C + I0 + G0 ,C = α + β Yd Where: Yd = Y – T, Y = Income, T = Taxes
Government spending and investment are exogenously determined at G and I respectively. Assuming this model represent a three sectors economy, determine Investment multiplier, Government spending multiplier and Tax multiplier. If there is an increase in marginal propensity to consumer, how will this affect the national income?
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Expert's answer
2016-11-19T06:49:09-0500
Y = C + I0 + G0, C = α + β Yd, where: Yd = Y – T, Y = Income, T = Taxes Investment multiplier mi = 1/(1 - MPC) = 1/(1 - β). Government spending multiplier in this case is the same as investment multiplier, so mg = 1/(1 - MPC) = 1/(1 - β). Tax multiplier mt = MPC/(1 - MPC) = β/(1 - β). If there is an increase in marginal propensity to consume, then the national income will decrease.
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