22.10 Policy Application: Statistical Profiling in Random Car Searches: Local law enforcement officials sometimes engage in “random” searches of cars to look for illegal substances. When one looks at the data of who is actually searched, however, the pattern of searches often does not look random.

A. In what follows, assume that random searches have a deterrent effect; that is, the more likely someone believes he or she is going to be searched, the less likely he or she is to engage in transporting illegal substances.