When Testing a New Drug for an Illness, Which of These

question 21

Multiple Choice

When testing a new drug for an illness, which of these is a major reason to use a control group?

• A) Control groups eliminate all other factors that may cause statistical noise.
• B) More than one group is required to perform a statistical test for differences between a response and an expected response.
• C) People often get better just from thinking they have been treated, regardless of the actual effectiveness of the drug.
• D) Statistical power is maximized in tests that use two groups compared to those that just use one.

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