500
Identify the Experimental Group, Control Group, and Control Variable in the following scenario.
-Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower.
Spray the other half with water=Control group, Spray with coconut juice=Experimental Group, and the amount of treatment=Control Variable.