Exam 22: The Short Run Trade Off Between Inflation and Unemployment: Part A
Suppose,as in the 1970's in the U.S. ,that demographic groups which typically have higher unemployment rates become a larger percentage of the labor force.Would this have any effect on the long-run Phillips curve?
Since this would raise the natural rate of unemployment, the long-run Phillips curve would shift to the right.
Government expenditures increase.What happens to the price level and output? Explain how the change in the price level and output effect the inflation rate and the unemployment rate.
The price level and output rise. Because the price level rises, the inflation rate is higher. Because output is higher, the unemployment rate is lower.
Explain the connection between the vertical long-run aggregate supply curve and the vertical long-run Phillips curve
Both reflect the classical dichotomy.The vertical long-run aggregate supply curve says that,in the long run,the economy will be at its natural rate of output,and that this is the same no matter what the price level.The natural rate of output depends on the natural rate of unemployment.The vertical Phillips curve says that,in the long run,the economy will be at the natural rate of unemployment (corresponding with the natural rate of output),and that this is the same no matter what the inflation rate.Both curves are consistent with the classical dichotomy that says real variables are not affected by nominal variables.
Does a more steeply sloped Phillips curve make the sacrifice ratio smaller or larger than otherwise?
For a given short-run Phillips curve,if expected inflation is 10% but actual inflation is 8%,is the unemployment rate above or below its natural rate?
If the Fed responded to an adverse supply shock by increasing the growth rate of the money supply and maintained the higher growth rate, what would eventually happen to the short-run Phillips curve? Why?
In the long run what primarily determines the natural rate of unemployment? In the long run what primarily determines the inflation rate? How does this relate to the classical dichotomy?
How are the effects of a favorable supply shock shown in the Phillips curve diagram? If the Fed wants to return unemployment to its natural rate after the shock, what should it do?
List one specific policy that would shift the long-run Phillips curve to the right.
If there is a large and sudden but temporary increase in the price of oil, which way does the short-run Phillips curve shift? If the central bank does not respond what happens to inflation and the unemployment rate in the long run?
Some economists argue suddenly reducing money supply growth is a costly way to reduce inflation and that it may not work. For example, if a government cuts money growth but makes no real fiscal reforms, people will expect the government will eventually need to expand the money supply to pay for its expenditures. Thus, the promise to fight inflation will not be credible. Explain why credibility is important to a reduction in the inflation rate.
Suppose that the Fed unexpectedly pursues contractionary monetary policy. What will happen to unemployment in the short run? What will happen to unemployment in the long run? Justify your answer using the Phillips curves.
A central bank disinflates. Output falls by 3% for one year, 2% the second year, and 1% the third year. If inflation fell by 2 percentage points, what was the sacrifice ratio?
Assume the natural rate of unemployment is 6%. Draw the short-run and long-run Phillips curves and show the position of the economy if expected inflation is 3% and the actual inflation rate is 4%.
Assume the natural rate of unemployment is 6%. Draw the short-run and long-run Phillips curves and show the position of the economy if expected inflation is 3% and the actual inflation rate is 2%.
Why does a downward-sloping Phillips curve imply a positive sacrifice ratio?
How are the effects of the financial crisis shown using the Phillips curve diagram?
A central bank pledges to reduce the inflation rate from 20% to 5%. People reduce their inflation expectations to 10%, but the central bank only reduces inflation to 15%. What happens to the unemployment rate?
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