Blood loss in burn patients. A group of University of South Florida surgery researchers believes that the drug aprotinin is effective in reducing the blood loss of burn patients who undergo skin replacement surgery. (USF Office of Research Annual Report, 1997-1998.) In a clinical trial of 14 burn patients, half were randomly assigned to receive the drug and half a placebo (no drug). A preliminary analysis of the patients’ blood loss revealed that the group with the drug had a significant reduction in bleeding.
a. Identify the data collection method used for this study.
b. Does the study involve descriptive or inferential statistics? Explain.
c. What is the population (or sample) of interest to the researchers?
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