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![Researchers want to determine which cold remedy is most effective at controlling
cold symptoms. They are considering three methods of gathering data:
Method A: Researchers give cold remedy A or cold remedy B to people with colds
and then observe the duration of the cold symptoms exhibited by each group.
Method B: Researchers observe the cold symptoms exhibited by people with colds
who choose to take cold remedy A and people with colds who choose to take cold
remedy B.
Method C: Researchers ask people with colds if they feel better after taking cold
remedy A or cold remedy B.
Tell whether each method of gathering data is a survey, an observational study, or an
experiment. Which option would give the most reliable results?](https://content.bartleby.com/qna-images/question/e4899b4a-469c-4d61-b566-3286c3e149c4/31c1ac21-6983-46a1-98f2-2379ee07b8a8/cxiiw8k_thumbnail.jpeg)
Transcribed Image Text:Researchers want to determine which cold remedy is most effective at controlling
cold symptoms. They are considering three methods of gathering data:
Method A: Researchers give cold remedy A or cold remedy B to people with colds
and then observe the duration of the cold symptoms exhibited by each group.
Method B: Researchers observe the cold symptoms exhibited by people with colds
who choose to take cold remedy A and people with colds who choose to take cold
remedy B.
Method C: Researchers ask people with colds if they feel better after taking cold
remedy A or cold remedy B.
Tell whether each method of gathering data is a survey, an observational study, or an
experiment. Which option would give the most reliable results?
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