Please help! I will definitely upvote. Thank you!

A researcher wants to examine the effectiveness of two methods of physical therapy for patients who have had knee surgery. He plans to do this study in an orthopedic hospital with two wards. The patients need to stay in their own ward. Each ward has thirty patients in the 30-50 year age range and thirty patients in the 60-80 age range. The researchers want to control for age as well as weight. 4 a) Outline the steps that you think this researcher should take is assigning the patients to the two methods of physical therapy. b) Identify the relevant covariate(se) c) Do you suggest true experimental design or quasi-experimental design?- d) Do you suggest experimental control or statistical control or both?H e) What statistical analysis should this researcher apply for analyzing the data