L11 Econ 1011 Lecture 4: Chapter 4

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23 Oct 2018

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If demand is inelastic, then price increase raises total revenue. Income elasticity of demand percentage by which demand changes in response to a 1 percent change in income: owned price elasticity of demand only having to do with single thing, elastic demand is price-sensitive. Inelastic demand is not very price-sensitive: price elasticity of supply, a straight line supply curve that passes through origin will have unit elasticity at all points (e=1, determinants of supply elasticity, flexibility of inputs. If it is the case where supplier wants to increase quantity supplied, the more flexible the inputs are the better off supplier is: mobility of inputs. If difficult to bring anything in quickly then cannot change quantity of supply quickly: ability to use substitute inputs, time. If alternative inputs are easy to find then more elastic.

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Am I using economic concepts correctly in the following? Please correct and clarify for me if not.

In this scenario, we want to curb or decrease the use of drugs and the use of the services provided by prostitution. So, if you legalize either, and then in policy increase the prices for those goods or services, you can eliminate price-sensitive or elastic consumers, like teenagers. It does not solve the problem, but this is just an economic scenario, right? It will decrease documented use and users, but since these were black market operations, to begin with, there will always exist a black market to supply what the public markets cannot. Quality in these black markets will be poor, but prices will reflect this. Inelastic consumers, such as working adults, in the face of a price increase, will choose less expensive substitutes rather than abstain, and will even choose illegal avenues to attain before abstaining, or going without.

Another conundrum in the drug arena is the addictive vs non-addictive substances debate. Highly addictive substances like cocaine and heroin will experience less elasticity than substances such as nicotine or marijuana. Because it can be argued that addiction diminishes rational choice, increases in price that would normally cause users to refrain from use are not effective and thus do not end up lowering the quantity of drugs demanded, addiction counteracts theory and demand only decreases negligibly. Here, revenues would increase for the suppliers of such goods and services, while not even making a dent in the quantity of drugs demanded. Profits however may not increase as interdiction efforts also increase a supplier's production and distribution costs.

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Analyze the following case study.

Two ways to reduce the quantity of smoking demanded Public policymakers often want to reduce the amount that people smoke because of smoking's adverse health effects. There are two ways that policy can attempt to achieve this goal. One way to reduce smoking is to shift the demand curve for cigarettes and other tobacco products. Public service announcements, mandatory health warnings on cigarette packets, and the prohibition of cigarette advertising are all policies aimed at reducing the number of cigarettes demanded at any given price. If successful, these policies shift the demand curve or cigarettes to the left. Alternatively, policymakers can try to raise the price of cigarettes. If the government taxes the manufacture of cigarettes, for example. cigarette companies pass much of this ta on to consumers in the form of higher prices. A higher price encourages smokers to reduce the number of cigarettes they smoke. In this case, the reduced amount of smoking does not represent a shift in the demand curve. Instead, it represents a movement along the same demand curve to a point with a higher price and lower quantity. How much does the amount of smoking respond to changes in the price of cigarettes? Economists have attempted to answer this question by studying what happens when the tax on cigarettes changes. They have found that a 10 percent increase in the price causes a 4 percent reduction in the quantity demanded. Teenagers are found to be especially sensitive to the price of cigarettes - a 10 percent increase in the price causes a 12 percent drop in teenage smoking. A related question is how the price of cigarettes affects the demand for illicit drugs, such as marijuana. Opponents of cigarette taxes often argue that tobacco and marijuana are substitutes, so that high cigarette prices encourage marijuana use. By contrast, many experts on substance abuse view tobacco as a 'gateway drug' leading the young to experiment with other harmful substances. Most studies of the data are consistent with this view - they find that high cigarette prices are associated with reduced use of marijuana. In other words, tobacco and marijuana appear to be complements rather than substitutes.

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17. Which of the following is a determinant of supply?

A. Tastes and preferences

B. Price of a complementary good

C. Consumer income

D. Technology

18. A market is in equilibrium:

A. provided there is no surplus of the product

B. at all prices above that shown by the intersection of the supply and demand curves

C. if the amount producers want to sell is equal to the amount consumers want to buy

D. whenever the demand curve is downsloping and the supply curve is upsloping.

19. If the market price is above the equilibrium price:

A. A shortage will occur and producers will produce more and lower prices

B. A surplus will occur and producers will produce less and lower prices

C. A surplus will result and consumers will bid prices up

D. Producers will make extremely high profits

20. The market system automatically corrects a surplus condition in a competitive market by:

A. Raising the price of the commodity in question while increasing the quantity demanded

B. Raising the price of the commodity in question while decreasing the quantity demanded

C. Reducing the price of the commodity in question while increasing the quantity demanded

D. Reducing the price of the commodity in question while decreasing the quantity demanded

21. The price elasticity of demand measures:

A. buyer responsiveness to price changes.

B. the extent to which demand curve shifts as incomes change.

C. the slope of the demand curve.

D. how far business executives can stretch their fixed costs

22. The elasticity of demand for a product is likely to be greater:

A. if the product is a necessity, rather than a luxury good.

B. the greater the amount of time over which buyers adjust to a price change

C. the smaller the proportion of one's income spent on the product.

D. the smaller the number of substitute products available.

23. Market failure is said to occur whenever:

A. private markets do not allocate resources in the most economically desirable way

B. prices rise

C. some consumers who want a good do not obtain it because the price is higher than they are willing to pay

D. government intervenes in the functioning of private markets.

24. A negative externality or spillover cost occurs when:

A. firms fail to achieve allocative efficiency.

B. firms fail to achieve productive efficiency.

C. the price of the good exceeds the marginal cost of producing it.

D. the total cost of producing a good exceeds the costs borne by the producer

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L11 Econ 1011 Lecture 4: Chapter 4

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