Determine whether the follow descriptions correspond to an observational study or an experiment. Write "EXPERIMENT" for experiment and "OBSERVATION" for observational study. (without quotations) (a)  Studying how patients respond when given a placebo. answer:  (b)  A new antibiotic is tested in effectiveness by recording how the drug works on patients that already take the drug. answer:  (c)  A new study examines how efficiently althletes burn

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