Many studies are trying to find a cure for chronic back pain. In one such study, a physician is comparing the medication currently being used (drug A) to a newly developed drug (drug B). Seventy-four...

Read the following prompt and complete 5.a and 5.b

Extracted text: Many studies are trying to find a cure for chronic back pain. In one such study, a physician is comparing the medication currently being used (drug A) to a newly developed drug (drug B). Seventy-four volunteers, suffering from chronic back pain, are participating in this study. The physician's assistant has a list of all 74 subjects and randomly divides the subjects into two groups. Group 1 will receive drug A, and Group 2 will receive drug B. The assistant is the only one who knows to which group the subjects have been assigned. The physician monitors the subjects over a 2-month period, and the amount of improvement is recorded. Question 5 Subquestions 5.a Which type of study is this? Observational Study Experiment 5.b Which of the following terms played a role in this study? (Select all that apply.) Control Group Randomization Blinding Placebo