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5 September, 10:08

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?

Adults were not interviewed.

Not enough teens were interviewed.

The investigation was based on taste.

The lemonade labels introduced bias.

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Answers (1)
  1. 5 September, 10:12
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    The labels introduced bias. Most or all of those teens could've tried those lemonades before and already decided which one they like. Or maybe they already had a natural bias towards a certain brand used.
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