Randomized controlled trials:
A. choose people randomly to measure the impact of a particular intervention, saving the cost of evaluating all participants.
B. randomly assign people into control and treatment groups in order to focus on the impact of a particular intervention.
C. control how much of a treatment is given to each participant in order to measure the ideal quantity.
D. are not a useful tool in assessing how specific interventions may influence economic development.
B. randomly assign people into control and treatment groups in order to focus on the impact of a particular intervention.
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If the general education level within a country rises significantly over time, it is likely that:
a. the country will move to a different point along its current production possibilities curve. b. the country's production possibilities curve will not change in any way. c. the country's production possibilities curve will shift in. d. the country's production possibilities curve will shift out. e. the country's production possibilities curve will become convex to the origin.
Mario's Pizza and Bella's Pizza are in tacit collusion to cooperate and each charge a high price for their pizzas. If Mario's Pizza initially cooperates with Bella's Pizza, but then switches and charges a low price and Bella's Pizza responds by forever charging a low price, this is an example of ________.
A) a trigger strategy B) a tit-for-tat strategy C) a one -shot game D) an end-period problem