Question

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. randomization is important when assigning the participants to the treatment and control groups to ensure
○ that there will be the same number of participants in both groups.
○ that the experiment results can be generalized to all people.
○ that both groups have participants that like both popular juice brands.
○ that both groups are roughly equivalent with regards to demographics and juice preferences.

Explanation:

Answer:

that both groups are roughly equivalent with regards to demographics and juice preferences.