Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 47 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 79 of the 95 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? whats the z score? whats p-value?

Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 47 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 79 of the 95 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? whats the z score? whats p-value?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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