Mathematics

29 April, 23:45

A lab is conducting a test to see if people prefer cola A or cola B. The steps in the test are outlined below:

Step 1. Recruit one hundred volunteers and tell them the purpose of the study.

Step 2. Give them cola A and ask them to tell how delicious it is.

Step 3. Give them cola B and ask them to rate the flavor.

Step 4. Reveal which cola they preferred.

Which step could lead to biased results?

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