Biology, 25.07.2019 06:30 tifftifftiff5069

Amedical 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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Amedical experiment is planned to compare the herb echinacea with a placebo for preventing colds. on...

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