Bobby's neighbor is growing a tree that is blocking Bobby's ocean view. Bobby is considering taking his neighbor to court. This is most likely an example of a:

Someone notices that sunspot activity is high just prior to recessions and concludes that sunspots cause recessions. This person has

a. confused association and causation. b. misunderstood the ceteris paribus assumption. c. used normative economics to answer a positive question. d. built an untestable model.

Because a famous airplane like the Spruce Goose is fixed in supply, its price is

A. inelastic. B. independently determined. C. supply determined. D. demand determined.