Determine whether the descruptions gven coriespond to an observational study or

Question

Determine whether the descruptions gven coriespond to an observational study or an experiment A. Patients are given Lipitor it double blind study to determine whether this drug has Ithe efect o lowering cholesterol experimert bservational study | B .] In the controversial study of patients with syphilis (Tuskegee Study of Untreated Syphilis in Negro Male) patients were not given treatment for the disease Instead, their health was followed for years after they were found to have contracted the disease A The Federal Drug Administration randomly selects a sample of Bayer aspirin tablets. They measure the amount of aspirin in each tablet for accuracy B. All cruise ship passengers are given magnetic bracelets, which they agree, of their own free will, to wear in an attempt to eliminate of diminish the effects of motion sickness

Explanation / Answer

In observational study, specific characteristics are observed and measured without attempting to modify the subjects being studied.

In experimental study, some treatments are applied and thier effect on subject is measured observed.

A. Patients are given Lipitor.....

Treatment and its effect is there.

B. In the controversial study of patients with syphilis.....

No treatment is given.

B. The Federal Drug Administration randomly.....

No treatment is given.

A. All cruise ship passengers....

Treatment and its effect is studied.

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