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14. Problem 14 In the short run, the quantity of output supplied by firms can deviate from the natural level of output if the actual price level deviates from the expected price level in the economy. A number of theories explain reasons why this might happen. For example, the sticky-price theory asserts that the output prices of some goods and services adjust slowly to changes in the price level. Suppose firms announce the prices for their products in advance, based on an expected price level of 100 for the coming year. Many of the firms sell their goods through catalogs and face high costs of reprinting if they change prices. The actual price level turns out to be 90. Faced with high menu costs, the firms that rely on catalog sales choose not to adjust their prices. Sales from catalogs will decrease * , and firms that rely on catalogs will respond by lowering * the quantity of output they supply. If enough firms face high costs of adjusting prices, the unexpected decrease in the price level causes the quantity of output supplied to fall short of * the natural level of output in the short run. Suppose the natural level of output is $60 billion of real GDP and that people expect a price level of 100. Suppose the economy's short-run aggregate supply (AS) curve is given by the following equation: On the following graph, use the purple line (diamond symbol) to plot this economy's long-run aggregate supply (LRAS) curve. Then use the orange line segments (square symbol) to plot the economy's short-run aggregate supply (AS) curve at each of the following price levels: 90, 95, 100, 105, and 110. Quantity of Outout Supplied = Natural Level of Outout + a x ( Price Level Amol - Price LevelPrend) 125 12 AS 110 LRAS PRICE LEVEL 10 20 30 40 50 80 70 80 60 100 OUTPUT (Billions of dollars) The short-run quantity of output supplied by firms will fall short of the natural level of output when the actual price level _falls below the price level that people expected