Chemistry, 14.10.2020 02:01 harleycochran2ovyt3n
A doctor wants to test a new medicine that will help people who have trouble sleeping. He has two groups of volunteers. He plans to give the medicine to group I and not to group II. Group II will be the control group. The doctor knows that people taking the medicine may sleep better just because they expect the medicine to work. How can he be sure of whether the medicine really works?
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A doctor wants to test a new medicine that will help people who have trouble sleeping. He has two gr...
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