D) If the Fed sets the money supply at the same time as people are setting prices, so that everyone has the same information about the state of the economy, then monetary policy cannot be used systematically to stabilize output. Hence, a policy of keeping the money supply constant will have the same real effects as a policy of adjusting the money supply in response to the state of the economy. (This is called the policy irrelevance proposition.)

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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If the economy has rational expectations and the model is sticky price model. Could you explain why the following statement true in macroeconomics?

b) If the Fed sets the money supply at the same time as people are setting
prices, so that everyone has the same information about the state of the
economy, then monetary policy cannot be used systematically to stabilize
output. Hence, a policy of keeping the money supply constant will have the
same real effects as a policy of adjusting the money supply in response to
the state of the economy. (This is called the policy irrelevance proposition.)
Transcribed Image Text:b) If the Fed sets the money supply at the same time as people are setting prices, so that everyone has the same information about the state of the economy, then monetary policy cannot be used systematically to stabilize output. Hence, a policy of keeping the money supply constant will have the same real effects as a policy of adjusting the money supply in response to the state of the economy. (This is called the policy irrelevance proposition.)
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