Andrew Davis

Numerade Educator

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Educator Statistics

Numerade tutor for 4 years
6765 Students Helped

Topics Covered

How Markets Work
Understanding Short-Term Economic Fluctuations
Unlocking Insights: Macroeconomic Data Analysis
The Long-Term Impact of the Real Economy: Insights and Analysis
Exploring Probability Topics: From Basics to Advanced Strategies
How Markets Work: Understanding the Dynamics of Supply and Demand
Understanding Firm Behavior and Industry Organization
Discover the Power of Introduction: Your Guide to Making a Lasting Impression
Understanding the Impact of Money and Prices in the Long Run
Explore Deeper: Topics for Further Study
The Economics of Labor Markets: Understanding the Dynamics
The Macroeconomics of Open Economies: Understanding Global Markets
Balancing Markets and Welfare: Striving for Equilibrium
The Economics of Public Sector: Understanding Government Spending
Stand Out with Differentiation Strategies | Boost Your Business
Mastering Partial Derivatives: Essential Techniques and Tips
Introduction
Mastering Integrals: Tips and Tricks for Calculus Success
Mastering Integration Techniques for Optimal Results
Applications of Integration: Exploring Real-World Solutions
Unlock the Power of Vectors: Discover Their Limitless Possibilities
Mastering Matrices: An Introduction to the Fundamentals
Introduction to Combinatorics & Probability: Understanding the Basics
Final Thoughts: Reflections and Insights for Moving Forward

Andrew's Textbook Answer Videos

03:36
Principles of Economics

Suppose that business travelers and vacationers have the following demand for airline tickets from New York to Boston:
$$
\begin{array}{ccc}
\text { Price } & \begin{array}{c}
\text { Quantity Demanded } \\
\text { (business travelers) }
\end{array} & \begin{array}{c}
\text { Quantity Demanded } \\
\text { (vacationers) }
\end{array} \\
\hline \$ 150 & 2,100 \text { tickets } & 1,000 \text { tickets } \\
200 & 2,000 & 800 \\
250 & 1,900 & 600 \\
300 & 1,800 & 400
\end{array}
$$
a. As the price of tickets rises from $\$ 200$ to $\$ 250,$ what is the price elasticity of demand for (i) business travelers and (ii) vacationers? (Use the midpoint method in your calculations.)
b. Why might vacationers have a different elasticity from business travelers?

Chapter 5: Elasticity and Its Application
Andrew Davis
02:37
Principles of Economics

Imagine a society that produces military goods and consumer goods, which we'll call "guns" and "butter."
a. Draw a production possibilities frontier for guns and butter. Using the concept of opportunity
cost, explain why it most likely has a bowed-out shape.
b. Show a point that is impossible for the economy to achieve. Show a point that is feasible but
inefficient.
c. Imagine that the society has two political parties, called the Hawks (who want a strong military)
and the Doves (who want a smaller military). Show a point on your production possibilities
frontier that the Hawks might choose and a point that the Doves might choose.
d. Imagine that an aggressive neighboring country reduces the size of its military. As a result, both
the Hawks and the Doves reduce their desired production of guns by the same amount. Which
party would get the bigger "peace dividend," measured by the increase in butter production?
Explain.

Chapter 2: Thinking Like an Economist
Andrew Davis
01:10
Principles of Economics

An economy is operating with output that is \$400 billion below its natural level, and fiscal policymakers want to close this recessionary gap. The central bank agrees to adjust the money supply to hold the interest rate constant, so there is no crowding out. The marginal propensity to consume is ${4\over5}$, and the price level is completely fixed in the short run. In what direction and by how much would government spending need to change to close the recessionary gap? Explain your thinking.

Chapter 34: The Influence of Monetary and Fiscal Policy on Aggregate Demand
Andrew Davis
01:49
Principles of Economics

Maria can read 20 pages of economics in an hour. She can also read 50 pages of sociology in an hour. She spends 5 hours per day studying.
a. Draw Maria's production possibilities frontier for reading economics and sociology.
b. What is Maria's opportunity cost of reading 100 pages of sociology?

Chapter 3: Interdependence and the Gains from Trade
Andrew Davis
01:47
Macroeconomics

If the Fed believes the economy is headed for a recession, what actions should it take? If the Fed believes the inflation rate is about to sharply increase, what actions should it take?

Chapter 15: Monetary Policy
Section 3: Monetary Policy and Economic Activity
Andrew Davis
1 2 3 4 5 ... 21

Andrew's Quick Ask Videos

04:27
Microeconomics

The government has decided that the free-market price of cheese is too
low.
a. Suppose the government imposes a binding price floor in the cheese
market. Draw a supply-and-demand diagram to show the effect of this
policy on the price of cheese and the quantity of cheese sold. Is there a
shortage or surplus of cheese?
b. Farmers complain that the price floor has reduced their total
revenue. Is this possible? Explain.
c. In response to farmers’ complaints, the government agrees to
purchase all the surplus cheese at the price floor. Compared to the
basic price floor, who benefits from this new policy? Who loses?

Andrew Davis
03:55
Microeconomics

Assume that a pure monopolist and a purely competitive firm have the same unit costs. Contrast the two with respect to
(a) price, (b) output, (c) profits, (d) allocation of resources, and (e) impact on income transfers.

Andrew Davis
04:28
Microeconomics

Consider your decision about how many hours to work.
a. Draw your budget constraint assuming that you pay no taxes on your income. On the same diagram, draw another budget constraint assuming that you pay a 15 percent income tax.
b. Show how the tax might lead to more hours of work, fewer hours, or the same number of hours. Explain.

Andrew Davis
02:39
Macroeconomics

Economists in Funlandia, a closed economy,
have collected the following information about
the economy for a particular year:
Y = 10,000
C = 6,000
T = 1,500
G = 1,700
The economists also estimate that the
investment function is:
I = 3,300 – 100 r,
where r is the country’s real interest rate,
expressed as a percentage. Calculate private
saving, public saving, national saving,
investment, and the equilibrium real interest
rate.

Andrew Davis
06:38
Intro Stats / AP Statistics

Suppose the amounts of sugar intake for adults follow a
normal distribution with an average of 77 grams per day and a
standard deviation of 7 grams per day. Draw appropriate sketches in
each case and answer the following questions:
a) [3] Find the probability that a randomly chosen adult eats
between 75 grams and 80 grams of sugar per day.
b) [3] Suppose adults whose sugar intakes are in the top 2%
among the population need more medical investigations. What is the
minimum amount of the sugar intake of the top 2%? (cut-off
point)
c) [6] A sample of 100 adult was selected at random. What is the
probability that the average sugar intake of the sampled adult is
less than 78 grams per day? (explain all the steps; the
distribution and its parameters)
d) [2] Suppose we did not know that the amounts of sugar intake
for adults follow a normal distribution, would you still be able to
find the distribution of the statistic of interest in part c?

Andrew Davis
03:29
Intro Stats / AP Statistics

Suppose a perfectly competitive firm's total cost of production (TC) is
TC(q) = q^3 - 8q^2 + 30q + 20,
and the firm's marginal cost of production (MC) is
MC(q) = 3q^2 - 16q + 30.
The firm's short-run supply curve is given by

Andrew Davis
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