I = 50 – 1000 -r where Y is real output and r is the real interest rate. Government purchases and taxes are Ĝ = 500, Î= 500. The money market equilibrium curve-or LM curve-is where P is the price level and i is the nominal interest rate. The Central Bank (CB) is initially supplyin M = 10000 units of money, and expected inflation is xª = 0.05. The long-run aggregate supply (LRAS) Y, = 1000. Suddenly, there is a climate shock that changes the marginal propensity to consume (MPC), and tl consumption function changes to C' = 50 +0.8 - (Y – T).

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Problem 1QTC
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C = 50 + 0.9 · (Y – T)
I = 50 – 1000 -r
where Y is real output and r is the real interest rate. Government purchases and taxes are
G = 500, T = 500.
The money market equilibrium curve-or LM curve-is
M Y
P 5i
where P is the price level and i is the nominal interest rate. The Central Bank (CB) is initially supplying
M = 10000 units of money, and expected inflation is aº = 0.05. The long-run aggregate supply (LRAS) is
Y, = 1000.
Suddenly, there is a climate shock that changes the marginal propensity to consume (MPC), and the
consumption function changes to
C' = 50 + 0.8 - (Y – T).
1. Explain how the long-run values of (r, i) are determined before the climate shock.
2. Which, if any, of the graphs from Appendix A best depicts the long-run change in the interest rate(s)
due to the climate shock? Explain.
3. Explain how the long-run values of (Y, P) are determined before the climate shock.
Transcribed Image Text:C = 50 + 0.9 · (Y – T) I = 50 – 1000 -r where Y is real output and r is the real interest rate. Government purchases and taxes are G = 500, T = 500. The money market equilibrium curve-or LM curve-is M Y P 5i where P is the price level and i is the nominal interest rate. The Central Bank (CB) is initially supplying M = 10000 units of money, and expected inflation is aº = 0.05. The long-run aggregate supply (LRAS) is Y, = 1000. Suddenly, there is a climate shock that changes the marginal propensity to consume (MPC), and the consumption function changes to C' = 50 + 0.8 - (Y – T). 1. Explain how the long-run values of (r, i) are determined before the climate shock. 2. Which, if any, of the graphs from Appendix A best depicts the long-run change in the interest rate(s) due to the climate shock? Explain. 3. Explain how the long-run values of (Y, P) are determined before the climate shock.
Appendix A Graphs for Q1.2 and Q2.2
Real
Interest
Real
Interest
Rate
Rate
I(r)
I(r)
I(r)"
Savings/
Investment
Savings/
Investment
(a)
(b)
Real
Nominal
Interest
Rate
IS'
IS
Interest
Rate
IS'
IS
LM
LM
i=r
i'
GDP
GDP
Y' Y
(d)
Y'
(c)
Transcribed Image Text:Appendix A Graphs for Q1.2 and Q2.2 Real Interest Real Interest Rate Rate I(r) I(r) I(r)" Savings/ Investment Savings/ Investment (a) (b) Real Nominal Interest Rate IS' IS Interest Rate IS' IS LM LM i=r i' GDP GDP Y' Y (d) Y' (c)
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