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do you want to test the hypothesis that coffee consumption increases hair loss. Describe how you...

do you want to test the hypothesis that coffee consumption increases hair loss. Describe how you would perform the experiment to test out the hypothesis. In your description identify the following: control, independent variable, and dependent variable.
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Answer #1

In this case, we will use mice as animal model in order to predict what would happen to humans. We will use 4 groups (each group will have 5 individuals):

Control group: Water only

Experimental 1: 25% concentration of coffee

Experimental 2: 50% concentration of coffee

Experimental 3: 75% concentration of coffee

The experiment consist in feed the mice with the different treatment during one month. After one month, the mice will be removed from the cage and the hairs within the cage will be extracted and weigh in a balance. We predict that the experimental group 3 will lose more hair that the rest of the experimental groups and the control group will have just a small amount of hair.

Control: Water only

Independent variable: Concentration of coffee

Dependent variable: Gram of hair obtained in each group

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