If individuals who sit in the back of the classroom receive lower grades on average than the rest of the class, does that mean that sitting in the back of a classroom causes one to perform poorly on exams?
a. Not necessarily. The reoccurrence of a certain relationship between two variables does not necessarily imply causation.
b. It is not possible for an economist to determine causation
between variables.
c. The reoccurrence of such a relationship is sufficient evidence that sitting in the back of a classroom will lead to lower grades.
d. none of the above
a
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Answer the following statement(s) true (T) or false (F)
1. The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), or Superfund, was the first legislative act aimed at hazardous waste sites in the United States. 2. The Superfund Amendments and Reauthorization Act (SARA) maintained the “Superfund” at its original level of $1.6 billion. 3. The Brownfields Act was passed during the Obama administration and deals with abandoned properties whose redevelopment is compromised by contamination. 4. Removal actions are long-term official responses to the release of a hazardous substance aimed at achieving a more permanent solution. 5. Hazardous waste sites posing the greatest threat to health and the ecology are placed on the National Priorities List (NPL).
A firm will not shut down in the short run as long as\ it is at the point where MR = MC and:
A. P > AVC. B. P > ATC. C. P > MC. D. P > AFC.
Marginally attached workers are discouraged workers who have stopped their job search for reasons other than the lack of jobs.
Answer the following statement true (T) or false (F)
The fact that you can use money to buy things is a result of which characteristic?
A. The fact that it is a measure of value. B. Its use as a medium of exchange. C. The fact that it is a store of value. D. The fact that it is backed by gold.