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 expericipment? Drag the sentence into the box that best shows where in the experiment the process happens. (2 points)300 collage students who already study regularly are chosed to participate in the experiment.| at the end of the experiment, researches compare the average focus rating between the two groups.| the student are then assigned to one of two groups" one group studies in the complete silence,and the other studies with low-volume instrumental music| after each seesionn,participant rate their level of focus on a scale from 1 to 10

Answer 1

Here’s how the processes of random selection and random assignment are identified in your experiment:

Random Selection:
"300 college students who already study regularly are chosen to participate in the experiment."

Random Assignment:
"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."

You can place the sentences in the following way:

• Random Selection: "300 college students who already study regularly are chosen to participate in the experiment."
• Random Assignment: "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."