Inspectors send trained “renters” of various races and ethnic backgrounds, and of both sexes, to inquire about renting randomly assigned advertised apartments. They look for evidence that landlords deny access illegally based on race, sex, or ethnic background.

For the following reports about statistical studies, identify the following items (if possible). If you can’t tell, then say so—this often happens when we read about a survey.

a) The population

b) The population parameter of interest

c) The sampling frame

d) The sample

e) The sampling method, including whether or not randomization was employed

f) Any potential sources of bias you can detect and any problems you see in generalizing to the population of interest