Biology, 01.04.2020 15:07 girlhooper4life11

–/2 points my notes question part points submissions used 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 1. an increase to 3 indicates a cold.

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