A food manufacturer wants to identify what types of dessert are most popular with people in Brownstown. Of these four methods, which is most likely to generate unbiased information?
Survey all bakery owners in Brownstown to determine which products sell fastest
Randomly choose streets in Brownstown and visit every fourth house to survey the occupants.
Include a questionnaire with every package of cookies and/or ice cream.
Ask the first 250 people who arrive at the local ice cream store for their opinion.