Answer:
Two different hours of wakefulness is the dependent variable
Verbal learning is the independent variable
Control group : sleeping for long hours
Experimental group are the two categories of people
Step-by-step explanation:
Depends variable is a variable that is varied in an experiment.
The two different length of sleeping hours are the dependent variables,
It cannot stand on its own but rather depend on independent variable.
Independent variable is the variable that can stand on it own. Verbal Learning here is the independent variable and it depended upon by length of sleep.
Control group: Sleeping for long hours, it is the control because that is what nature demand
Experimental group at the people being used for the experiment.