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FA25 ECON 302 002 Final Exam
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An open economy is fully characterized by the following IS curve, monetary policy rule, and Phillips curve: IS: ð ~ ð¡ = ð ¯ â ( ð ¯ ð + ð ¯ ð ð¥ ) ( ð ð¡ â ð ¯ ) + ð ¯ ð ð¥ ( ð ð¡ â â ð ¯ ) , where ð ð¡ â is the real interest abroad, ð ¯ = ð ¯ ð + ð ¯ ð + ð ¯ ð + ð ¯ ð ð¥ â 1 , and ð ¯ ð ð¥ = ð ¯ ð ð¥ â ð ¯ ð ð . Monetary policy rule: ð ð¡ â ð ¯ = ð ¯ ( ð ð¡ â ð ¯ ) Phillips curve: ð ð¡ = ð ð¡ â 1 + 𣠯 ð ~ ð¡ + ð ¯ ð¡ Assume that ð ¯ = 0 , ð ¯ ð ð¥ = 0 , ð ¯ ð = ð ¯ ð ð¥ = 0.2 , 𣠯 = 0.5 , ð ð¡ â = 0.04 , ð ¯ = 0.03 , ð ð¡ â 1 = ð ¯ = 0.02 , ð ¯ = 1 , and ð ¯ ð¡ = 0.045 . Calculate ð ð¡ = ______ percent. Round your answer to the nearest tenth of a percent. Note: Calculate your answers for this one and the next three questions in a spreadsheet application. Enter rounded numbers in the answer box for each question. Do not, however, round your intermediate answers in the spreadsheet.
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We begin by restating the problem in our own words and listing the given equations and parameters so we can trace how pi_t would be derived.
Question setup:
- IS curve (domestic demand for Y~_t): Y~_t = a_bar â (b_i i + b_nx nx) (R_t â r_bar) + b_nx nx (R_t* â r_bar)
- With a_bar = 0 and a_bar_nx = 0, and given b_i = b_nx = 0.2, the domestic IS relation simplifies to Y~_t = â(0.2 i + 0.2 nx)(R_t â r_bar) + 0.2 nx (R_t* â r_bar) (subject to nx scaling in the last term).
- Monetary policy rule: R_t â r_bar = m_bar (Ï_t â Ï_bar). With m_bar = 1, this implies R_t â r_bar = Ï_t â Ï_bar.
- Foreign interest spread term: R_t* â r_bar = 0.04 â 0.03 = 0.01.
- Phillips curve: Ï_t = Ï_{tâ1} â 1 + v_bar Y~_t + o_bar_t. G......Login to view full explanationç»åœå³å¯æ¥ç宿Žçæ¡
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An open economy is fully characterized by the following IS curve, monetary policy rule, and Phillips curve: IS: ð ~ ð¡ = ð ¯ â ( ð ¯ ð + ð ¯ ð ð¥ ) ( ð ð¡ â ð ¯ ) + ð ¯ ð ð¥ ( ð ð¡ â â ð ¯ ) , where ð ð¡ â is the real interest abroad, ð ¯ = ð ¯ ð + ð ¯ ð + ð ¯ ð + ð ¯ ð ð¥ â 1 , and ð ¯ ð ð¥ = ð ¯ ð ð¥ â ð ¯ ð ð . Monetary policy rule: ð ð¡ â ð ¯ = ð ¯ ( ð ð¡ â ð ¯ ) Phillips curve: ð ð¡ = ð ð¡ â 1 + 𣠯 ð ~ ð¡ + ð ¯ ð¡ Assume that ð ¯ = 0 , ð ¯ ð ð¥ = 0 , ð ¯ ð = ð ¯ ð ð¥ = 0.2 , 𣠯 = 0.5 , ð ð¡ â = 0.04 , ð ¯ = 0.03 , ð ð¡ â 1 = ð ¯ = 0.02 , ð ¯ = 1 , and ð ¯ ð¡ = 0.025 . Calculate ð ð¡ = ______ percent. Round your answer to the nearest tenth of a percent. Note: Calculate your answers for this one and the next three questions in a spreadsheet application. Enter rounded numbers in the answer box for each question. Do not, however, round your intermediate answers in the spreadsheet.
Suppose the Federal Reserve decreases interest rates from 4% to 3%, which shifts aggregate demand and increases short-run output to 5.0%. If there are no other shocks to the economy, and the resulting change in inflation is 2.0 percentage points, what is the value of the parameter ð ¯ ? Round your answer to the nearest tenth.
Suppose the Federal Reserve decreases interest rates from 4% to 3%, which shifts aggregate demand and increases short-run output to 3.0%. If there are no other shocks to the economy, and the resulting change in inflation is 1.5 percentage point, what is the value of the parameter ð ¯ ? Round your answer to the nearest tenth.
You are a staff economist with the Federal Reserve. The chairman says to you, âWe are seeing signs of inflation above our target rate, and I donât think the Phillips curve is very steep. What should we do to bring the rate back to our target rate?â How do you respond? Answer:Â âBecause the Phillips curve is relatively flat, we need to [ Select ] decrease increase interest rates [ Select ] by just a little very aggressively in order to [ Select ] raise lower the investment-to-potential output ratio and hence short-run output. A flat Phillips curve requires a [ Select ] big change small change in short-run output in order to lower the inflation rate.â
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