This exam is my own work. I have not and will not give nor r…

This exam is my own work. I have not and will not give nor receive assistance with this exam while taking the exam (e.g. discussing questions with other students). I may use course materials (i.e., ebook, printed slides/notes) to answer questions as allowed by the instructors. I have not and will not use AI, social media, or other digital/electronic/web aids while taking this exam. I have not and will not copy or print this exam. I will not discuss exam questions or content with other students after I have taken the exam.

Mehran heard that drinking a high protein supplement after f…

Mehran heard that drinking a high protein supplement after football training would improve his muscle mass. To test his hypothesis, the experimental group would receive a high protein drink and the control group would drink only water. Who should be selected for the control group in this experiment?

Fifty plants were tested in an experiment. The plants were d…

Fifty plants were tested in an experiment. The plants were divided into two groups of 50. All conditions remained constant, except that the first group was given Growmore fertilizer, while the second group was not. At the end of six weeks, the growth data was recorded. What was the experimental variable  (manipulated variable) in this experiment?