Whats a good hypothesis for lisa simpsons experiment "does rogooti affect the speed of hair growth? " (ill provide more information if needed)

There would be two groups. The control group would not get the product while the experimental group would get the product. The independent variable is the amount of product and the length of hair growth is the dependent variable. Lisa will measure the length of her family’s hair each day for a month and graph the results for each group. She will then analyze the results to see if Rogooti resulted in quicker growing hair.

hope this helps