Question
Researchers are studying whether students focus better in quiet spaces or rooms with soft background music. 300 college students who already study regularly are randomly chosen to participate in the experiment. The students are then randomly assigned to one of two groups: one group studies in complete silence, and the other studies with low-volume instrumental music. After each session, participants rate their level of focus on a scale from 1 to 10. At the end of the experiment,
- researchers compare the average focus ratings between the two groups.
Where does random selection happen in the experiment?
Where does random assignment happen in the experiment?
1. Random selection:
2. Random assignment:
A. The students are then assigned to one of two groups: one group studies in complete silence and the other studies with low volume instrumental music.
B. At the end of the experiment, researchers compare the average focus ratings between the two groups.
C. After each session, participants rate their level of focus on a scale from one to 10.
D. 300 college students who already study regularly are chosen to participate in the experiment.
- researchers compare the average focus ratings between the two groups.
Where does random selection happen in the experiment?
Where does random assignment happen in the experiment?
1. Random selection:
2. Random assignment:
A. The students are then assigned to one of two groups: one group studies in complete silence and the other studies with low volume instrumental music.
B. At the end of the experiment, researchers compare the average focus ratings between the two groups.
C. After each session, participants rate their level of focus on a scale from one to 10.
D. 300 college students who already study regularly are chosen to participate in the experiment.
Answers
GPT-4o mini
1. Random selection: **D. 300 college students who already study regularly are chosen to participate in the experiment.**
2. Random assignment: **A. The students are then assigned to one of two groups: one group studies in complete silence and the other studies with low volume instrumental music.**
2. Random assignment: **A. The students are then assigned to one of two groups: one group studies in complete silence and the other studies with low volume instrumental music.**