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6 . Expectations and the Phillips curve The following graph plots the long-run Phillips curve (LRPC) and short-run Phillips curve (SRPC1 ) for an economy
6 . Expectations and the Phillips curve The following graph plots the long-run Phillips curve (LRPC) and short-run Phillips curve (SRPC1 ) for an economy currently experiencing long-run equilibrium at point A (grey star symbol).\fWhich of the following is true along .9le ? O The actual unemployment rate is 1%. O The natural rate of unemployment is 2%. O The expected ination rate is 2%. O The actual inflation rate is 2%. Suppose that the central bank for this economy suddenly and unexpectedly increases the money supply in an effort to reduce unemployment. As a result of this unanticipated policy action, actual inflation rises to 5%. On the previous graph, use the black point { plus symbol labeled \"5\") to illustrate the shortrun effects of this policy. Suppose that now, after a period of 5% inflation, households and firms begin to expect that the inflation rate will persist at the level of 5%. On the previous graph, use the purple llhe (diamond symbol) to draw SRPC'Z, the short-run Phillips curve that is consistent with these expectations, assuming that it is parallel to SRPCI. Finally, using the orange point (square symbol labeled "C\" , indicate on the previous graph the new, long-run equilibrium for this economy. The inflation rate at point C is V the inflation rate at point A, and the unemployment rate at point C is V the unemployment rate at point A. Was the central bank able to achieve its goal of lowering unemployment? 0 Yes, but only in the short run; in the long run, unemployment returned to its natural rate. 0 Yes, the central bank's policy successfully reduced unemployment in both the short run and the long run. 0 No, because the central bank cannot affect the unemployment rate through monetary policy. Now, suppose that the public fully anticipates the central bank's decision to increase the money supply. Assume the public also believes that the monetary authority is firmly committed to carrying out this policy. According to rational expectations theory, when the economy is in long-run equilibrium, a fully anticipated increase in the money supply will cause the economy to move '7 on the previous Phillips curve graph. In this case, rational expectations theory predicts that the fully anticipated increase in the money supply will have the immediate effect of 'V in the inflation rate and Y in the unemployment rate
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