A scientist wants to find the percent of teens that like the taste of "brand X". lemonade over "brand Y" lemonade. She conducts a taste test of 500
teenagers. She gives each teen a bottle of lemonade with the labels showing
the brand of each lemonade. She asks each teenager to taste each brand
after drinking water in between. She finds that 50% of teens like brand X
and 50% like brand Y lemonade. Why are the results of the survey most
likely unreliable?
The investigation was based on taste.
Not enough teens were interviewed.
Adults were not interviewed.
The lemonade labels introduced bias.