(a) Assume the economy starts at full employment. Illustrate the short-run and long-run impact of an unexpected monetary contraction using the IS-LM model, the AD-AS model, and the Phillips curve. Be sure to label: i. the axes; ii. the curves; iii. the initial equilibrium values; iv. the direction the curves shift; v. the short-run equilibrium values; and vi. the long-run equilibrium values. Explain in words what your graphs illustrate. )

(a) Assume the economy starts at full employment. Illustrate the short-run and long-run impact of an unexpected monetary contraction using the IS-LM model, the AD-AS model, and the Phillips curve. Be sure to label: i. the axes; ii. the curves; iii. the initial equilibrium values; iv. the direction the curves shift; v. the short-run equilibrium values; and vi. the long-run equilibrium values. Explain in words what your graphs illustrate. ) (b) Assume that people form expectations rationally and that the sticky-price model describes the aggregate supply curve in the economy. For each of the following scenarios explain whether or not monetary policy can have real effects on the economy. i. The central bank determines monetary policy at the same time that firms are setting prices, so that both firms and policymakers have all of the same information. ) ii. The central bank determines monetary policy after firms have set prices using information not available at the time prices were set. ) (c) Suppose the slope of the Phillips curve has flattened in recent decades, as evidence seems to suggest. What does this imply about the cost of disinflation?