Suppose you’re interested in determining if a particular med…
Suppose you’re interested in determining if a particular medical treatment is effective in reducing knee pain in women aged 50 years and over with a confirmed diagnosis of kneecap arthritis. Your study participants consisted of 500 volunteers, all of whom are women aged 50 years or older, regularly attend supervised knee exercise training classes, and have confirmed diagnoses of kneecap arthritis. You randomly assign 250 of your selected subjects into two groups including a group that receives the medical treatment and a group that does not. After the treatments have been completed, you assess the 500 study participants to determine whether or not their knee pain has changed. You find that the group which received the treatment showed a significant reduction in knee pain vs. the group which did not receive the treatment. Which of the following can you conclude?