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You want to find out if a new drug can help lower blood pressure. a.nothing b.survey c.experiment d.observational study​
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5 votes
You want to find out if a new drug can help lower blood pressure.

a.nothing
b.survey
c.experiment
d.observational study​

User Antwann
by
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1 Answer

7 votes
D. Observational study.
User Zal
by
5.8k points
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