Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 51 subjects treated with echinacea developed rhinovirus infections In a placebo group, 87 of the 103 subjects developed rhinovirus infections. Use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections as follows. Identify the test statistic. (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? the null hypothesis. There V sufficient evidence to support the claim that echinacea treatment has an effect. Does echinacea appear to have any effect on the infection rate? O A. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it increases the infection rate. O B. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it lowers the infection rate. O C. Echinacea does not appear to have a significant effect on the infection rate. ul O D. The results are inconclusive.
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 51 subjects treated with echinacea developed rhinovirus infections In a placebo group, 87 of the 103 subjects developed rhinovirus infections. Use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections as follows. Identify the test statistic. (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? the null hypothesis. There V sufficient evidence to support the claim that echinacea treatment has an effect. Does echinacea appear to have any effect on the infection rate? O A. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it increases the infection rate. O B. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it lowers the infection rate. O C. Echinacea does not appear to have a significant effect on the infection rate. ul O D. The results are inconclusive.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 22PFA
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