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- 2. What is the eqution and shape of the modem aggregate supply curve according to imperfect infomation model? Using the equation of Aggregate Supply (AS) derive the equation of Expectation augmented Phillips curve and explain causes of inflation in tems of it. How does expectation augmented Phillips curve explain Stagflation?11. Changing the slope of the Phillips curve: Suppose the slope of the Phillips curve the parameter -increases. How would the results differ from the Inc Volcker disinflation example considered in the chapter? What kind of changes in the economy might influence the slope of the Phillips curve? ona) Are the effects of an increase in aggregate demand in the AD-AS model consistent with the Phillips curve? Explain. b. Discuss the factors determining the slope of the short-run Phillips curve. Is the linear shape appropriate? Why or why not?
- (a) What events of the 1970s and 1980s made economists believe that the shortrun relationship between inflation and unemployment was unstable (not fixed and permanent)? (b) Explain, using a diagram(s) and the concept of stagflation, the relationship between shifts in the SRAS curve and the position of the short-run Phillips curve.Problem 2: Production Model Suppose that firms produce according to the following production function: Y = At(K₂) (Lt) (N₁) ¹-a-B where At captures productivity, K, capital, L, labor, and N, land available for business use. We can define wt as wages, rk as rental rates for capital, and r as rental rates for land usage. (a) (b) Write down the firm's profit maximizing problem. Be sure to identify the vari- ables the firm can choose and which it takes as given. Are there increasing returns to labor (L)? Land (N)? Explain.5. Consider the standard Phillips curve. Select all the correct statements: (a) A positive aggregate demand shock will lead to an upward shift in the Phillips curve. (b) Changes in short-run output will lead to movements along the Phillips curve. (c) A negative inflation shock will lead to movements along the Phillips curve. (d) A shock to the price of oil will lead to a shift in the Phillips curve. (e) The inflation rate will always be equal to zero when short-run output is equal to zero.
- 4. Views on the Long-run Phillips Curve Fleur is a macroeconomist who works as a policy maker for a European government. She believes that policy makers can choose from a menu of inflation and unemployment combinations and that the non-accelerating inflation rate of unemployment (NAIRU) varies over time. What school of thought best matches Fleur's viewpoint? Earlier monetarist New classical and OECD economist Persistence Keynesian Hysteresis Keynesian Old Keynesian39. Model the Phillips curve and explain what the curve means in terms of policy.Suppose that a fall in consumer spending causes a recession. a. Illustrate the changes in the economy using both an aggregate supply/aggregate demand diagram and a Phillips curve diagram. What happens to inflation and unemployment in the short run? (5%) b. Now suppose that over time, expected inflation changes in the same direction that actual inflation changes. What happens to the position of the short-run Phillips curve? After the recession is over, does the economy face a better or worse set of inflation– unemployment combinations? (5%)
- 3. a) Using AD-AS model, explain how a negative demand shock due to COVID 19 will affect the economy in the short run and long run (Show short run and long run adjustment in a single diagram). b) Derive the equation of Expectation Augmented Phillips curve using standard equation of Aggregate Supply (AS) and explain causes of inflation in terms of it. How does expectation augmented Phillips curve explain Stagflation?A. What assumptions did Thomas Sargent make when he claimed that inflation is always and everywhere a fiscal phenomenon?" B. Why is it appropriate in the book's short-term model for the author to use the Phillips Curve as an Aggregate Supply curve? Does it capture the working of the labor market as well as an AS curve based, say, on sticky wages? C. Provide an example of the book's short-run model being based on "microfoundations."19. Contrast demand-pull and bottleneck inflation. Need ASAP