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2. Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35...
2.
Rhino viruses typically cause common colds. In a test of the
effectiveness of echinacea, 35 of the 40 subjects treated with
echinacea developed rhinovirus infections. In a placebo group, 90
of the 107 subjects developed rhinovirus infections. Use a 0.05
significance level to test the claim that echinacea has an effect
on rhinovirus infections. ldentify the test statistic and the
P-Value. Test the claim by constructing an appropriate confidence
interval.(95%)
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