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Chapter 3: Problem 15

This year, the small town of Middling experiences a sudden doubling of the birth rate. After three years, the birth rate returns to normal. Use a diagram to illustrate the effect of these events on the following. a. The market for an hour of babysitting services in Middling this year b. The market for an hour of babysitting services 14 years into the future, after the birth rate has returned to normal, by which time children born today are old enough to work as babysitters c. The market for an hour of babysitting services 30 years into the future, when children born today are likely to be having children of their own

Short Answer

Expert verified
Short Answer: The three different stages in time are: (a) this year, (b) 14 years into the future, and (c) 30 years into the future. During (a) this year, the demand for babysitting services increases, resulting in a higher market price and quantity of services provided. In (b) 14 years into the future, the supply of babysitters increases, causing the market price for services to decrease and the quantity of services provided to increase. Lastly, in (c) 30 years into the future, the demand for babysitting services increases again due to the baby boomers having their own children, leading to another increase in both the market price and quantity of services provided.

Step by step solution

01

Part (a): Babysitting services this year

First, draw the initial supply and demand curves for babysitting services on the market. Label them as D1 and S1. Now, since the birth rate has doubled this year, there is an increase in the demand for babysitting services. This causes the demand curve for babysitting services to shift to the right. Draw the new demand curve (D2). Due to the increase in demand, the market price for an hour of babysitting services also increases. Also, the quantity of babysitting services provided would increase, following the shift in demand.
02

Part (b): Babysitting services 14 years into the future

Start by drawing the initial supply and demand curves, D1 and S1. After 14 years, the children born when the birth rate doubled will be old enough to work as babysitters. This would imply that there is an increase in the supply of babysitters in the market. Draw a new supply curve (S2) to the right of S1, representing the increased supply of babysitters. Due to the increase in the supply of babysitters, the market price for an hour of babysitting services would decrease, and the quantity of babysitting services provided would increase.
03

Part (c): Babysitting services 30 years into the future

Draw the initial supply and demand curves, D1 and S1. After 30 years, the children born during the baby boom will likely have their own children. This would represent a new increase in the demand for babysitting services. Draw a new demand curve (D3) to the right of D1, representing the increased demand for babysitting services 30 years into the future. Due to the increase in demand, the market price for an hour of babysitting services would increase once again, and the quantity of babysitting services provided would also increase. In conclusion, the sudden doubling of the birth rate in the town of Middling had a significant impact on the market for an hour of babysitting services throughout different stages in time.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Birth Rate Changes
When we talk about birth rate changes, we mean the number of births per year or per time period increasing or decreasing significantly. These changes can have immediate as well as long-term effects on the market for various goods and services, such as babysitting services in the example of Middling.

Imagine a small town where the birth rate suddenly doubles. This means there are more babies now than before, so naturally, the demand for childcare services, like babysitting, increases because more families need help to take care of their kids. As demand goes up, if the supply of babysitters doesn't change, this makes the price of babysitting go up too. This happens because there are more people wanting babysitting services than there are babysitters available to provide them. In economic terms, this scenario represents a shift to the right in the demand curve, leading to an increase in price.
  • Immediate impact: Sudden increase in demand for related services
  • Possible result: Higher prices and greater quantity of services provided
Understanding birth rate changes is important in forecasting the needs for services and planning what resources or services might be needed both now and in the future. This concept is key to understanding dynamic changes in markets.
Market Equilibrium
Market equilibrium is a state where the quantity of a product or service demanded by consumers is equal to the quantity supplied by producers. This balance determines the market price at which goods and services are traded.

In Middling鈥檚 example, initially, the market for babysitting services is in equilibrium where the initial demand (D1) and supply (S1) meet. When many babies are born suddenly, the demand increases, shifting the demand curve to the right as explained earlier. This creates a new equilibrium point where the price is higher, adjusting to match the increased demand.

Later, when those babies grow up and enter the workforce, they might become babysitters themselves. This increases the supply, shifting the supply curve to the right. A new market equilibrium is then established at a lower price point because there are more babysitters available than before. The market always strives to return to equilibrium, adjusting supply or demand to stabilize prices.
  • Equilibrium reflects a stable market situation
  • Price adjusts according to changes in supply and demand
Understanding market equilibrium helps in predicting how the market reacts to various economic events, such as fluctuations in birth rates.
Future Market Predictions
Predicting how markets will behave in the future involves analyzing current trends and understanding how changes will affect supply and demand over time.

In the context of Middling, looking forward 30 years, a significant factor is that children born during a birth spike may have children of their own. This leads to another potential increase in demand for babysitting services, shifting the demand curve yet again. At each stage, predicting these shifts allows both businesses and policymakers to plan adequately.
  • Understanding trends: Knowing how baby booms affect future market needs
  • Planning for changes: Adjusting supply in anticipation of demand shifts
Being able to predict market behaviors helps businesses and economies prepare for future needs, ensuring that they can adjust supply, manage pricing strategies, and prevent potential shortages or surpluses. Future market predictions rely heavily on understanding past and current trends in data, such as birth rates, and incorporating expectations of how these trends will continue to unfold.

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Most popular questions from this chapter

Aaron Hank is a star hitter for the Bay City baseball team. He is close to breaking the major league record for home runs hit during one season, and it is widely anticipated that in the next game he will break that record. As a result, tickets for the team's next game have been a hot commodity. But today it is announced that, due to a knee injury, he will not in fact play in the team's next game. \Lambdassume that season ticket holders are able to resell their tickets if they wish. Use supply and demand diagrams to explain your answers to parts a and \(b\). a. Show the case in which this announcement results in a lower equilibrium price and a lower equilibrium quantity than before the announcement. b. Show the case in which this announcement results in a lower equilibrium price and a higher equilibrium quantity than before the announcement. c. What accounts for whether case a or case b occurs? d. Suppose that a scalper had secretly learned before the announcement that Aaron Hank would not play in the next game. What actions do you think he would take?

Suppose that the supply schedule of Maine lobsters is as follows: $$ \begin{array}{c|c} \begin{array}{c} \text { Price of lobster } \\ \text { (per pound) } \end{array} & \begin{array}{c} \text { Quantity of lobster } \\ \text { supplied (pounds) } \end{array} \\ \$ 25 & 800 \\ 20 & 700 \\ 15 & 600 \\ 10 & 500 \\ 5 & 400 \end{array} $$ Suppose that Maine lobsters can be sold only in the United States. The U.S. demand schedule for Maine lobsters is as follows: $$ \begin{array}{c|c} \begin{array}{c} \text { Price of lobster } \\ \text { (per pound) } \end{array} & \begin{array}{c} \text { Quantity of lobster } \\ \text { demanded (pounds) } \end{array} \\ \$ 25 & 200 \\ 20 & 400 \\ 15 & 600 \\ 10 & 800 \\ 5 & 1,000 \end{array} $$ a. Draw the demand curve and the supply curve for Maine lobsters. What are the equilibrium price and quantity of lobsters? Now suppose that Maine lobsters can be sold in France. The French demand schedule for Maine lobsters is as follows: $$ \begin{array}{c|c} \begin{array}{c} \text { Price of lobster } \\ \text { (per pound) } \end{array} & \begin{array}{c} \text { Quantity of lobster } \\ \text { supplied (pounds) } \end{array} \\ \$ 25 & 100 \\ 20 & 300 \\ 15 & 500 \\ 10 & 700 \\ 5 & 900 \end{array} $$ b. What is the demand schedule for Maine lobsters now that French consumers can also buy them? Draw a supply and demand diagram that illustrates the new equilibrium price and quantity of lobsters. What will happen to the price at which fishermen can sell lobster? What will happen to the price paid by U.S. consumers? What will happen to the quantity consumed by U.S. consumers?

Let's assume that each person in the United States consumes an average of 37 gallons of soft drinks (nondiet) at an average price of \(\$ 2\) per gallon and that the U.S. population is 294 million. At a price of \(\$ 1.50\) per gallon, each individual consumer would demand 50 gallons of soft drinks. From this information about the individual demand schedule, calculate the market demand schedule for soft drinks for the prices of \(\$ 1.50\) and \(\$ 2\) per gallon.

Find the flaws in reasoning in the following statements, paying particular attention to the distinction between shifts of and movements along the supply and demand curves. Draw a diagram to illustrate what actually happens in each situation. a. "A technological innovation that lowers the cost of producing a good might seem at first to result in a reduction in the price of the good to consumers. But a fall in price will increase demand for the good, and higher demand will send the price up again. It is not certain, therefore, that an innovation will really reduce price in the end." b. "A study shows that eating a clove of garlic a day can help prevent heart disease, causing many consumers to demand more garlic. This increase in demand results in a rise in the price of garlic. Consumers, seeing that the price of garlic has gone up, reduce their demand for garlic. This causes the demand for garlic to decrease and the price of garlic to fall. Therefore, the ultimate effect of the study on the price of garlic is uncertain."

Although he was a prolific artist, Pablo Picasso painted only 1,000 canvases during his "Blue Period." Picasso is now dead, and all of his Blue Period works are currently on display in museums and private galleries throughout Europe and the United States. a. Draw a supply curve for Picasso Blue Period works. Why is this supply curve different from ones you have seen? b. Given the supply curve from part a, the price of a Picasso Blue Period work will be entirely dependent on what factor(s)? Draw a diagram showing how the equilibrium price of such a work is determined. c. Suppose rich art collectors decide that it is essential to acquire Picasso Blue Period art for their collections. Show the impact of this on the market for these paintings.
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