Principles of Economics 2e
2nd Edition
ISBN: 9781947172364
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 25, Problem 15RQ
What is the Keynesian prescription for recession? For inflation?
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2. Question
The 'Democratic Family' consists of three members {mother m, father f, daughter
d}, that have different preferences with respect to how much money X € [0,8]
they think should be invested in the new family car. These preferences can be
represented by the following utility functions:
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Mother m: um(X) = 2X - X²
Father f: uf(X) = 10X - X²
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Calculate for each family member (f, m, d) the preferred amount of money
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family members vote on two alternatives). Derive the family preference and
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3. Question
You invented a new lateral-flow test for asymptomatic Covid-19 detection,
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such that it always reports a negative test result. Assume that the incidence
rate is 5 per 1000 and that your test is used for detection of asymptomatic
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(a) Calculate the probability that 100 randomly determined volunteers receive
a correct test result by using the AND-rule and the OR-rule. Can your
test be qualified as a diagnostic test?
(b) The health authorities are investigating the performance of your test.
Government guidelines require a specificity (conditional probability to re-
ceive a negative test result given that the test-taker is not infected with
COVID19) of at least 97% and a sensitivity (conditional probability to
receive a positive test result given that the test-taker is infected with
COVID-19) of at…
3. Question
You invented a new lateral-flow test for asymptomatic Covid-19 detection,
where saliva is entered into a test-tube and then the result is shown directly
on the device. However, to save on costly chemicals you designed the tests
such that it always reports a negative test result. Assume that the incidence
rate is 5 per 1000 and that your test is used for detection of asymptomatic
cases (without symptoms).
(a) Calculate the probability that 100 randomly determined volunteers receive
a correct test result by using the AND-rule and the OR-rule. Can your
test be qualified as a diagnostic test?
(b) The health authorities are investigating the performance of your test.
Government guidelines require a specificity (conditional probability to re-
ceive a negative test result given that the test-taker is not infected with
COVID19) of at least 97% and a sensitivity (conditional probability to
receive a positive test result given that the test-taker is infected with
COVID-19) of at…
Chapter 25 Solutions
Principles of Economics 2e
Ch. 25 - In the Keynesian framework, which of the following...Ch. 25 - In a Keynesian framework, using an AD/AS diagram,...Ch. 25 - Use the AD/AS model to explain bow an inflationary...Ch. 25 - Suppose the U.S. Congress cuts federal government...Ch. 25 - How would a decrease in energy prices affect the...Ch. 25 - Does Keynesian economics require government to set...Ch. 25 - List three practical problems with the Keynesian...Ch. 25 - Name some economic events not related to...Ch. 25 - Name some government policies that cod cause...Ch. 25 - From a Keynesian point of view, which is more...
Ch. 25 - Why do sticky wages and prices increase the impact...Ch. 25 - Explain what economists mean by menu costs.Ch. 25 - What tradeoff does a Phillips curve show?Ch. 25 - Would you expect to see long-run data trace out a...Ch. 25 - What is the Keynesian prescription for recession?...Ch. 25 - How did the Keynesian perspective address the...Ch. 25 - In its recent report, The Conference Boards Global...Ch. 25 - What may happen if growth in China continues or...Ch. 25 - Does it make sense that wages would be sticky...Ch. 25 - Suppose the economy is operating at potential GDP...Ch. 25 - Do you think the Phillips curve is a useful tool...Ch. 25 - Return to the table from the Economic Report of...Ch. 25 - Explain what types of policies the federal...
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