Question: A random sample of 100 households, from the set of all households containing two or more members in a given geographical area, is selected and their television viewing habits are monitored for six months. A random selection of 50 of the households is sent a brochure each week advertising a certain program. The purpose of the study is to determine whether there is any relationship between exposure to the brochure and whether or not this program is watched.
a) Identify suitable response and predictor variables.
b) If a relationship is found, can this be claimed to be a cause-effect relationship? Explain why or why not.