In a clinical trial of the effectiveness of echinacea for preventing colds, the results in the table
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In a clinical trial of the effectiveness of echinacea for preventing colds, the results in the table below were obtained (based on data from “An Evaluation of Echinacea Angustifolia in Experimental Rhinovirus Infections,” by Turner et al., New England Journal of Medicine, Vol. 353, No. 4). Use a 0.05 significance level to test the claim that getting a cold is independent of the treatment group. What do the results suggest about the effectiveness of echinacea as a prevention against colds?
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To test the claim that getting a cold is independent of the treatment group we will perform a chisquare test of independence The chisquare test compares the observed frequencies in each category to th...View the full answer
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Related Book For 
Mathematical Interest Theory
ISBN: 9781470465681
3rd Edition
Authors: Leslie Jane, James Daniel, Federer Vaaler
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