Mathematics, 25.09.2020 05:01, xwalker6772

. Placebos are used to randomly assign participants to treatment or control ? 2. Using a random chance procedure to assign subjects to treatment or control reduces bias ? 3. A well-designed placebo allows an experiment to be conducted blind. ? 4. In an observational study, the investigators assign the subjects to treatment or control. ? 5. In a blind experiment, the subjects do not know whether they are in the treatment group or control group. ? 6. Placebos are used so that even the people who do not receive a treatment can benefit from the study. ? 7. A placebo is used in all controlled experiments. ? 8. Controlled experiments can be randomized or nonrandomized.

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. Placebos are used to randomly assign participants to treatment or control ? 2. Using a random chan...