Identifying the causal effects of a policy by looking at the average change over time in the outcome variable is compared to the average change in a control group is called
A. intention to treat.
B. difference-in-differences.
C. statistical significance.
D. regression discontinuity.
Answer: B
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Under what circumstances is a merger unlikely to be approved?
What will be an ideal response?
During a period when new entrants are being attracted to an industry, we would expect that: a. economic profits are positive
b. as a result, economic profits are falling. c. as a result, economic profits are rising. d. both (a) and (b) are true.
The table to the right shows Keira's utility from soup and sandwiches. The price of soup is $2 per cup and the price of a sandwich is $3. Keira has $18 to spend on these two goods. What is Keira's marginal utility per dollar spent on the third cup of soup?
A) 72 units of utility
B) 36 units of utility
C) 12 units of utility
D) 6 units of utility
A carbon tax could reduce greenhouse emissions by:
A. raising the price of gasoline and reducing driving. B. raising the price of electricity, reducing the quantity of electricity demanded, and reducing the fossil fuels burned. C. cause electricity producers to switch to lower carbon fuels. D. All of these