Now solved: Testing Claims About Proportions. In Exercises 718, test the given claim

QUESTION:

Testing Claims About Proportions. In Exercises 718, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, Pvalue or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.. Is Echinacea Effective for Colds? Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 45 subjectstreated with echinacea developed rhinovirus infections. In a placebo group, 88 of the 103 subjects developed rhinovirus infections (based on data fromAn Evaluation of Echinacea Angustifolia in Experimental Rhinovirus Infections, by Turner, et al., New England Journal of Medicine, Vol. 353, No. 4).We want to use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections.a. Test the claim using a hypothesis test.b. Test the claim by constructing an appropriate confidence interval.c. Based on the results, does echinacea appear to have any effect on the infection rate?