This exercise considers the IS-LM-PC model and sheds some light on the dynamic adjustment over time...
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This exercise considers the IS-LM-PC model and sheds some light on the dynamic adjustment over time following, e. g., a policy shock. To make the timing clear, all variables that are (potentially) time-varying are written throughout with a subscript indicating the period. The demand side of the economy is given by: Y₁ = C₁(Y₁-T₁) +1₁(Y₁, ₁+x) + G₂ C₂ = 500+0.6(YT) I₁ = 300+ 0.2Y - 2,000(+₁) (a) Derive the IS curve for unspecified values of G₁, T, and , i.e., with the letters Gt, T and re still in there. This will be helpful later when studying the dynamics of the economy when, e. g., government spending changes at a certain point in time. The central bank targets the real policy rate, i.e., r = 7, by setting the nominal interest rate i, accordingly, with r = -f and f = -1. The approximate Phillips curve is given - with expectations formation as stated - by: T₂ = π₁_1 + (m + 2) -am, with the specific values of the markup m = 0.025, the catch-all variable z = 0.015 and a 0.5 in this exercise. The labor force is given by L = 5,000. For the time being, the government follows a balanced budget policy, i.e., G₁ = T₁. The risk premium equals r = 0.03 and the central bank sets the nominal interest rate such that F, = 0.01. (b) Calculate the natural rate of unemployment u, natural output Y, and transform - using the specified values - the Phillips curve from the hat given above into the format given slides and the book, i.e., - -1 = (Y₂-Y₂). (c) At time t = 0, the inflation rate is = 0.01. Assume that G₁ = T₁ = 500. Solve for short-run equilibrium at time t = 1, i.e., calculate the equilibrium values of output Y₁, consumption C₁, investment I₁, the nominal interest rate i₁, the real policy rate r₁, the unemployment rate u₁, the inflation rate ₁, the expected inflation rate r and the budget balance Ti - G₁. (d) In order to improve the public health system, the government decides to perma- nently increase government spending by setting G₂ = Ga=... = 540 from the (beginning of the) second period t = 2. Calculate the (short-run) equilibrium values for all variables, as in (c), for t = 2 and t = 3. Discuss your findings: Which variables change? Which ones remain unchanged? This exercise considers the IS-LM-PC model and sheds some light on the dynamic adjustment over time following, e. g., a policy shock. To make the timing clear, all variables that are (potentially) time-varying are written throughout with a subscript indicating the period. The demand side of the economy is given by: Y₁ = C₁(Y₁-T₁) +1₁(Y₁, ₁+x) + G₂ C₂ = 500+0.6(YT) I₁ = 300+ 0.2Y - 2,000(+₁) (a) Derive the IS curve for unspecified values of G₁, T, and , i.e., with the letters Gt, T and re still in there. This will be helpful later when studying the dynamics of the economy when, e. g., government spending changes at a certain point in time. The central bank targets the real policy rate, i.e., r = 7, by setting the nominal interest rate i, accordingly, with r = -f and f = -1. The approximate Phillips curve is given - with expectations formation as stated - by: T₂ = π₁_1 + (m + 2) -am, with the specific values of the markup m = 0.025, the catch-all variable z = 0.015 and a 0.5 in this exercise. The labor force is given by L = 5,000. For the time being, the government follows a balanced budget policy, i.e., G₁ = T₁. The risk premium equals r = 0.03 and the central bank sets the nominal interest rate such that F, = 0.01. (b) Calculate the natural rate of unemployment u, natural output Y, and transform - using the specified values - the Phillips curve from the hat given above into the format given slides and the book, i.e., - -1 = (Y₂-Y₂). (c) At time t = 0, the inflation rate is = 0.01. Assume that G₁ = T₁ = 500. Solve for short-run equilibrium at time t = 1, i.e., calculate the equilibrium values of output Y₁, consumption C₁, investment I₁, the nominal interest rate i₁, the real policy rate r₁, the unemployment rate u₁, the inflation rate ₁, the expected inflation rate r and the budget balance Ti - G₁. (d) In order to improve the public health system, the government decides to perma- nently increase government spending by setting G₂ = Ga=... = 540 from the (beginning of the) second period t = 2. Calculate the (short-run) equilibrium values for all variables, as in (c), for t = 2 and t = 3. Discuss your findings: Which variables change? Which ones remain unchanged?
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a To derive the IS curve for unspecified values of overlineGt overlineTt and xt we use the given spe... View the full answer
Related Book For
Smith and Roberson Business Law
ISBN: 978-0538473637
15th Edition
Authors: Richard A. Mann, Barry S. Roberts
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