tatianadavis3811 tatianadavis3811

10-04-2018
Biology

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A medical experiment is planned to compare the herb echinacea with a placebo for preventing colds. one response variable will be "volume of nasal secretions" (if you have a cold, you blow your nose a lot). suppose the average volume of nasal secretions in people without colds is 3. an increase to 4 indicates a cold.

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tisherself tisherself

10-04-2018

I think the answer is: it cud indicate an allergy..

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