Identify the population, variables, types of variables, type ofsampling plan used, and any potential sources of bias in thefollowing situation. Researchers spend one Saturday night waitingoutside of a bar to conduct a survey on attitudes towards drinkingand driving. They ask every 5th person who comes out of the bar thenumber of drinks they had that night, their age, and if theybelieve that drinking and driving is a serious problem.
