Question: A study in El Paso, Texas looked at seat belt use by drivers. Drivers were observed at randomly chosen convenience stores. After they left their cars, they were invited to answer questions that included questions about seat belt use. In all, 75% said they always use seat belts, yet only 65% were wearing seat belts when they pulled into the store parking lot. Explain the reason for the bias observed in response to the survey. Do you expect bias in the same direction in most surveys about seat belts?