Question: (Durga et al., 2007) a. Briefly explain why this is an experiment, not an observational study. This study is an experiment because the subjects are

(Durga et al., 2007) a. Briefly explain why this is an experiment, not an observational study. This study is an experiment because the subjects are randomly assigned to treatment groups. b. For this experiment, clearly name the i. subjects studied, ii. factor(s), iii. levels of the factor(s), iv. response variable(s) and their units, and v. design of the experiment. c. What does it mean to say the study was "double-blind" and why is it important

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