In Problems, determine whether the study
Chapter 1, Problem 10E(choose chapter or problem)
Problem 10E
In Problems, determine whether the study depicts an observational study or an experiment.
Rats with cancer are divided into two groups. One group receives 5 milligrams (mg) of a medication that is thought to fight cancer, and the other receives 10 mg. After 2 years, the spread of the cancer is measured.
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