Answers Problems Chapter 4 Principles of Economics - Mankiw

Any change that lowers the quantity that buyers wish to purchase at any given price shifts the demand curve to the left.

-The role and significance of prices in the market economy has to do with supply and demand. If there are the same amount of buyers as products, the price will settle. If there are more buyers than products, the price of the product will rise. And, if there are more products than buyers, the price of the product will decrease. This occurs until the supply of the product matches the demand of the product.

At the price of $5.00, the quantity supplied equals the quantity demanded. At a price of $7.00, the quantity demanded is 120 greeting cards and the quantity supplied is 160 greeting cards. There is a surplus of 40 greeting cards a week and the price falls. As the falls, the quantity demanded increases, the quantity supplied decreases, and the surplus decreases. The price falls until the surplus disappears. The market equilibrium occurs at a price of $5.00 and 140 cards a week so the price falls to $5.00 a greeting card.

2.) Which curve(s) change and based on the lists in the text of what causes demand and supply to shift what are the causes of theses shifts? D1 changed moving leftward indicating a decrease in demand due to a technological change: a technological setback causes a decrease. This causes price to go down as well as the demand is lower.

Supply is the total amount of a specific good that is available to the consumers. The supply of lobsters depends on the ocean temperature and since the ocean temperature is increasing, lobsters may once again come in a couple more weeks earlier than usual. In 2012, this caused the quantity of lobster to increase significantly, thus the supply curve shifted to the right. The shift caused the equilibrium price to decrease and the quantity to increase. On the other hand, if the ocean temperature is too low, then the lobster production rate is lowered. The supply curve will then shift to the left and cause the equilibrium price to increase and the quantity to decrease. The lobsterman cannot control the supply of lobsters since the production depends on the temperature. Another economic topic that came to my mind is the demand of a product. Demand is a consumer’s willingness to pay a price for a specific good. The demand curve would shift to the right if the price of the lobsters decreases due to mass production and vice

The supply and demand in microeconomics relies on competitors and the prices. The equilibrium is a point at which all the bidding is done.

This causes the price and the quantity move in opposite directions in a supply curve shift. Also, if the quantity supplied decreases at any given price the opposite will happen.

When there is a change of one of the factors of supply- like changes in the prices of production inputs like labour or capital; a change in production technology and its associated productivity change; or the amount of competition in a specific product market- there is a corresponding change in the supply curve. For example, if worker productivity improves due to some human capital or technology investment, then the costs of production decrease. This exerts a positive effect on the supply curve shifting it right, where the new market equilibrium is at a higher quantity and a lower price, holding everything else constant. There can also be a negative shift that moves the supply curve to the left, with the resulting market clearing price being higher and quantity lower, ceteris

Explain the market equilibrating process in relation to your experience. Include academic research to support your ideas.

Supply and demand regulate the amount of each good produced and the price at which it is sold. It is the conduct of individuals as they work together with one another in aggressive markets. “A market is a group of buyers and sellers of a particular good or service. The buyers, as a group, determine the demand for the product, and the sellers, as a group,

B) no government regulations exist. C) demand curves are perfectly horizontal. D) suppliers will supply any amount that buyers wish to buy. Answer: A 19) Once an equilibrium is achieved, it can persist indefinitely because A) shocks that shift the demand curve or the supply curve cannot occur. B) shocks to the demand curve are always exactly offset by shocks to the supply curve. C) the government never intervenes in markets at equilibrium. D) in the absence of supply/demand shocks no one applies pressure to change the price. Answer: D 20) If price is initially above the equilibrium level, A) the supply curve will shift rightward. B) the supply curve will shift leftward. C) excess supply exists. D) all firms can sell as much as they want. Answer: C 21) An equilibrium in a market is described by A) a price only. B) a quantity only. C) the excess supply minus the excess demand. D) a price and a quantity. Answer: D 3

Changes in the equilibrium price and quantity depend on exactly how the curves shift (Berkeley University, n.d.).

Evaluate each of the following changes in supply and/or demand. How will each affect equilibrium price and quantity in a competitive market? Will price and quantity rise, fall, or be unchanged? Based on shifts, will the answers be indeterminate?

This type of relationship can be explained by the law of demand which states that as price of a good increase or decreases, the quality demanded of that good falls or rises all other things being equal.

Like the law of demand, the law of supply demonstrates the quantities that will be sold at a certain price. But unlike the law of demand, the supply relationship shows an upward slope. This means that the higher the price, the higher the quantity supplied. Producers supply more at a higher price because selling a higher quantity at a higher price increases revenue.