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Mankiw Macroeconomics

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Mankiw Macroeconomics

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Chapter 1

1. An increase in the price of steel should lead to an inward shift of the supply curve for automobiles due to the high cost of steel in the production process. The new equilibrium will have a higher price and a lower quantity of cars. The price of steel is the exogenous variable in this question, while the price and quantity of automobiles are the endogenous variables.

2. Consumers often purchase a computer with a specific functional use in mind, so they will request a product that is best equipped for their intended use. These differences in computer preferences cannot be captured in a model that does not allow for differences among individuals. For example, a model that assumes that all individuals are equal will not be able to make predictions about changes in demand from desktop to laptop computers because the simple model will state that one type of computer is preferred by all.

3. a. i. Sticky prices. Grocery store prices often remain fixed for long intervals of time. ii. Market clearing behavior. The stock market is a type of auction market where the price of shares are constantly adjusting to changes in supply and demand. iii. Market clearing behavior. In recent years, computer manufacturers have changed prices more frequently in response to increased competition and the use of Internet sales. iv. Sticky prices. Pizza places change prices infrequently because they do not want to incur the costs associated with reprinting and redistributing their updated menus to customers.
b. Slow price adjustments are common in situations where prices have to be printed for display and therefore are costly to reprint. Also, firms may be reluctant to change prices if they believe that individuals will change their demand behavior if they are confronted by frequent changes. These firms prefer to wait longer

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