8. Economic fluctuations II The following graph shows the short-run aggregate supply curve (AS), the aggregate demand curve (AD), and the long-run aggregate supply curve (LRAS) for a hypothetical economy. Initially, the expected price level is equal to the actual price level, and the economy is in long-run equilibrium at its natural level of output, $120 billion. Suppose war in the world's main oil-producing region sharply reduces the world oil supply, causing oil prices to rise and increasing the costs of producing goods and services in this economy. Use the graph to help you answer the questions about the short-run and long-run effects of the increase in production costs that follow. (Note: You will not be graded on any adjustments made to the graph.) Hint: For simplicity, ignore any possible impact of the higher oil prices on the natural level of output. ? 140 LRAS AS CE LEVEL 135 130 125 120 AD I AS 14

8. Critical analysis Q10 When output and employment slowed in early 2008, the Bush administration and the Democratic Congress passed legislation sending households a check for $600 for each adult (and $300 per child). These checks were financed by borrowing. Evaluate the following statement. True or False: A Keynesian would not favor this action because despite the fact that the U.S. economy seemed to operate below its potential capacity, the government should avoid financing its spending by borrowing at any cost. True False

QUESTION 17 Suppose the aggregate demand and short-run aggregate supply schedules for an economy whose potential output equals $2,700 are given by the table: Aggregate Quantity of Goods and Services Price Level Demanded Supplied 0.50 $3,500 $1,000 0.75 3,000 2,000 1.00 2,500 2,500 1.25 2,000 2,700 1.50 1,500 2,800   What is the size of the recessionary gap?

Suppose that firms become very pessimistic about future business conditions and cut heavily on investment in capital equipment. [Label A, B, C for the initial, new short-run and new long-run equilibrium respectively] a)Use an aggregate-demand/aggregate-supply model to show the short-run effect of this pessimism on the economy. Label the new levels of prices and real output. Explain in words why the aggregate quantity of output supplied changes. (Use the sticky wage theory in your explanation)

11. Recession True or False: The aggregate-demand curve slopes downward because it is the horizontal sum of the demand curves for individual goods. True False

34) Unemployment would increase and prices would decrease if aggregate demand shifted left aggregate demand shifted right aggregate supply shifted left aggregate supply shifted right

(1)  Suppose the economy is in long-run equilibrium. If there is a sharp increase in the expected price level, what do we expect to happen?   Select one:   (A) In the short run, the SRAS curve will shift left, real GDP and price will fall. (B) In the short run, SRAS will shift right, real GDP will rise and prices will fall. (C) In the short run, AD will shift left, real GDP and prices will fall. (D) In the short run, LRAS and SRAS will shift left, causing real GDP to fall.

The following graph represents the short-run aggregate supply curve (SRAS) based on an expected price level of 120. The economy's full- employment output level is $9 trillion. Major unions across the country have recently negotiated three-year wage contracts with employers. The wage contracts are based on an expected price level of 120, but the actual price level turns out to be 160. Show the short-run effect of the unexpectedly high price level by dragging the curve or moving the point to the appropriate position. PRICE LEVEL (CPI) 240 200 160 40 0 0 3 SRAS[120] 6 9 12 REAL GDP (Trillions of dollars) 15 18 SRAS[120] 0 (?) Interpret the change you drew on the previous graph by filling in the blanks in the following paragraph:

8. Economic fluctuations I The following graph shows the economy in long-run equilibrium at the expected price level of 120 and the natural level of output of $600 billion. Suppose the government increases spending on building and repairing highways, bridges, and ports. Shift the short-run aggregate supply (AS) curve or the aggregate demand (AD) curve to show the short-run impact of the increase in government spending. 240 AS 200 AD 160 AS 120 80 AD 40 200 400 600 800 1000 1200 OUTPUT (Billions of dollars) In the short run, the increase in government spending on infrastructure causes the price level to the price level people expected and the quantity of output to the natural level of output. The increase in government spending will cause the unemployment rate to the natural rate of unemployment in the short run. Again, the following graph shows the economy in long-run equilibrium at the expected price level of 120 and the natural level of output of $600 billion, before the increase in…

7. The long-run aggregate supply curve and short-run adjustments Suppose an economy's short-run aggregate supply curve (SRAS), current equilibrium aggregate price level (P₁), and real GDP (Q1) are shown on the graph that follows. The economy currently has Natural Real GDP (QN) of $6 trillion. Use this information to place the orange long-run aggregate supply curve (LRAS, square symbols) in the correct position on the graph. 20 PRICE LEVEL 0 2 4 6 Q₁ REAL GDP (Trillions of dollars) 8 SRAS 10 LRAS