Question

If you are testing how the amount of sleep students get affects test performance, what should you change in the experiment

Answer 1

The amount of hours that a student sleeps

-I hope this helps

Answer 2

The amount of sleep or duration of sleep should be changed.

Step-by-step explanation:

Since, the independent variable here is the amount of sleep or the duration of sleep. And it is claimed that performance is dependent on the amount of sleep. Therefore, the duration of sleep should be changed in the experiment.