Question 2: Dr. Bicep is studying muscle growth. He randomly selects 30 patients to add instant protein to their daily diet and 30 patients to eat as they normally would. Both groups are required to hit the weight training room three times a week. The hypothesis is that the instant protein group will increase their muscle mass more than the group without the extra protein. a) What is the treatment imposed in this experiment? b) Describe a possible confounding variable. c) Describe a possible observational study for the same problem.