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Question
A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1,000 volunteers and need to ________.A) have 10 volunteers in the control group
B) put all women in the control group and all men in the experimental group
C) divide the groups by level of health
D) give all groups the same amount of the new medication
E) control for the type of headachestress, migraine, or other causes
Answer
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