microeconomicdemandandsupply-在線瀏覽
2024-10-22 17:55本頁面
【正文】 9。 2020 Pearson AddisonWesley Six main factors that change demand are ? The prices of related goods ? Expected future prices ? Ine ? Expected future ine and credit ? Population ? Preferences Demand 169。 2020 Pearson AddisonWesley Expected Future Prices If the expected future price of a good rises, current demand for the good increases and the demand curve shifts rightward. Ine When ine increases, consumers buy more of most goods and the demand curve shifts rightward. A normal good is one for which demand increases as ine increases. An inferior good is a good for which demand decreases as ine increases. Demand 169。 2020 Pearson AddisonWesley Figure shows an increase in demand. Because an energy bar is a normal good, an increase in ine increases the demand for energy bars. Demand 169。 2020 Pearson AddisonWesley Movement Along the Demand Curve When the price of the good changes and everything else remains the same, the quantity demanded changes and there is a movement along the demand curve. Demand 169。 2020 Pearson AddisonWesley If a firm supplies a good or service, then the firm 1. Has the resources and the technology to produce it, 2. Can profit from producing it, and 3. Has made a definite plan to produce and sell it. Resources and technology determine what it is possible to produce. Supply reflects a decision about which technologically feasible items to produce. The quantity supplied of a good or service is the amount that producers plan to sell during a given time period at a particular price. Supply 169。 and the lower the price of a good, the smaller is the quantity supplied. The law of supply results from the general tendency for the marginal cost of producing a good or service to increase as the quantity produced increases (Chapter 2, page 35). Producers are willing to supply a good only if they can at least cover their marginal cost of production. Supply 169。 2020 Pearson AddisonWesley Figure shows a supply curve of energy bars. A rise in the price of an energy bar, other things remaining the same, brings an increase in the quantity supplied. Supply 169。 2020 Pearson AddisonWesley A Change in Supply When some influence on selling plans other than the price of the good changes, there is a change in supply of that good. The quantity of the good that producers plan to sell changes at each and every price, so there is a new supply curve. When supply increases, the supply curve shifts rightward. When supply decreases, the supply curve shifts leftward. Supply 169。 2020 Pearson AddisonWesley Prices of Factors of Production If the price of a factor of production used to produce a good rises, the minimum price that a supplier is willing to accept for producing each quantity of that good rises. So a rise in the price of a factor of production decreases supply and shifts the supply curve leftward. Supply 169。 2020 Pearson AddisonWesley Expected Future Prices If the expected future price of a good rises, the supply of the good today decreases and the supply cu
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