In the video there was an experiment with coffee to understand if it affects how fast three groups of people get through a maze. During this experiment the independent variable would be the caffeine dosage and the dependent variable is the speed at which the subjects navigate through the maze. In this experiment there are 2 experimental groups, the participants who receive the coffee with caffeine and the controlled group who receive decaf coffee. To control the experiment from any other variables effecting it, the experiments use a random selection of participants. A hypothesis to test if sleep has any effect on how well a person learns would be, the more sleep a person gets, the better they are able to perceive information and the more
