PRINCIPLES OF ECONOMICS
14th Edition
ISBN: 2810015433483
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 2, Problem 14RQ
What are diminishing marginal returns?
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2. Question
The 'Democratic Family' consists of three members {mother m, father f, daughter
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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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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
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a correct test result by using the AND-rule and the OR-rule. Can your
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Government guidelines require a specificity (conditional probability to re-
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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 2 Solutions
PRINCIPLES OF ECONOMICS
Ch. 2 - Suppose Alphonsos town raised the price of bus...Ch. 2 - Return to the example in Figure 2.4. Suppose there...Ch. 2 - Could a nation be producing in a way that is...Ch. 2 - What are the similarities between a consumers...Ch. 2 - Individuals may not act in the rational,...Ch. 2 - Would an op-ed piece in a newspaper urging the...Ch. 2 - Would a research study on the effects of soft...Ch. 2 - Explain why scarcity leads to tradeoffs.Ch. 2 - Explain why individuals make Choices that are...Ch. 2 - What is comparative advantage?
Ch. 2 - What does a production possibilities frontier...Ch. 2 - Why is a production possibilities frontier...Ch. 2 - Explain why societies cannot make a choice above...Ch. 2 - What are diminishing marginal returns?Ch. 2 - What is productive efficiency? Allocative...Ch. 2 - What is the difference between a positive and a...Ch. 2 - Is the economic model of decision-making intended...Ch. 2 - What are four responses to the claim that people...Ch. 2 - Suppose Alphonsos town raises the price of bus...Ch. 2 - During the Second World War, Germanys factories...Ch. 2 - It is clear that productive inefficiency is a...Ch. 2 - What assumptions about the economy must he true...Ch. 2 - Do economists have any particular expertise at...Ch. 2 - If the price of a magazine is 4 each, what is the...Ch. 2 - If the price of a pie is 12, what is the maximum...Ch. 2 - Draw Maries budget constraint with pies on the...Ch. 2 - What is Maries opportunity cost of purchasing a...
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