OPEC is an example of a ________

What is the shape of the total revenue curve derived from a linear downward sloping demand curve?

A) Horizontal B) Vertical C) U-shaped D) Inverted u-shaped

Someone who committed the association-is-causation fallacy might conclude that

a. event B, which follows event A, was caused by the event A b. event B, which follows event A, was not necessarily caused by event A c. the simplest model is the best predictor d. what is true for the individual is also true for the group e. what is true for the individual is not necessarily true for the group