Question: A study designed to evaluate the effect of the herbal remedy Echinacea purpurea randomly assigned healthy children 2 to 11 years old to receive either

A study designed to evaluate the effect of the herbal remedy Echinacea purpurea randomly assigned healthy children 2 to 11 years old to receive either Echinacea or a placebo. Each time a child had an upper respiratory infection treatment with Echinacea or the placebo was given for the duration of the infection. Parental assessment of the illness severity was measured. The following are the counts from the study:

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