Question 2 • Academy - Algebra, Functions, and Data Analysis
A researcher wants to know if eating a mint affects whether people can distinguish between two popular orange juice brands. To conduct an experiment, the researcher places participants in two groups. The treatment group will eat a mint before drinking a juice, while the control group will not eat a mint before drinking. Then the participants will guess the juice brand.
Answer
A
that there will be the same number of participants in both groups.
B
that the experiment results can be generalized to all people.
C
that both groups have participants that like both popular juice brands.
D
that both groups are roughly equivalent with regards to demographics and juice preferences.
Explanation
To determine whether eating a mint affects brand recognition, the groups should be similar in other ways that could influence their guesses. Making the groups roughly equivalent in demographics and juice preferences helps isolate the effect of the mint. Having the same number of participants or including people who like both brands does not, by itself, ensure a fair comparison.
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