A scientist developing a dietary supplement for rabbits decides to give a new supplement to IO rabbits and but not to 10 other rabbits who will serve as a control.
(a) Briefly explain why it is important to randomly divide the rabbits in two groups. What might go wrong if the control group consists of the easy to catch or docile rabbits?
(b) Suppose the 20 rabbits are tagged with serial numbers from I to 20. Explain how you would select rabbits for the treatment and the control groups.