- Rhino Viruses Typically Cause Common Colds In A Test Of The Effectiveness Of Echinacea 39 Of The 44 Subjects Treated W 1 (58.19 KiB) Viewed 67 times
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. a. Test the claim using a hypothesis test. 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? O A. Ho: P₁ = P₂ H₁: P₁ P₂ O D. Ho: P₁ ≤P2 H₁: P₁ P₂ Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval The 99% confidence interval is $< (P₁-P₂) <. (Round to three decimal places as needed.) What is the conclusion bocad on the confidence interval reject OB. Ho: P₁ = P2 H₁: P₁ P₂ fail to reject O E. Ho: P₁ P2 H₁: P₁ P₂ OC. Ho: P₁ = P2 H₁: P₁ P2 the null hypothesis. There ▼ sufficient evidence to support the claim that echinacea treatment has an effect. OF. Ho: P₁ P2 H₁: P₁ = P₂
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. a. Test the claim using a hypothesis test. 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? O A. Ho: P₁ = P₂ H₁: P₁ P2 O D. Ho: P₁ P2 H₁: P₁ P₂ Identify the test statistic. z=0 (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is < (P₁-P₂) <- (Round to three decimal places as needed.) What is the conclusion hocad on the confidence interval OB. Ho: P₁ = P2 H₁: P₁ P₂ O E. Ho: P1 P2 H₁: P₁ P₂ is not O C. Ho: P₁ = P2 H₁: P₁ P2 the null hypothesis. There sufficient evidence to support the claim that echinacea treatment has an effect. is OF. Ho: P₁ P2 H₁: P₁ = P₂
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. Z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? ▼ the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is < (P₁-P₂) < (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? The P-value is Because the confidence interval limits 0, there c. Based on the results, does echinacea appear to have any effe O A. Echinacea does not appear to have a significant effect o O B. Echinacea does appear to have a significant effect on the O C. Echinacea does appear to have a significant effect on the O D. The results are inconclusive. does not the null hypothesis. There does appear to be a significant difference between the two proportions. There Co te? sufficient evidence to support the claim that echinacea treatment has an effect. e is evidence that it lowers the infection rate. e is evidence that it increases the infection rate. evidence to support the claim that echinacea treatment has an effect.
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. Z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? ▼ the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is < (P₁-P₂) < (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? The P-value is Because the confidence interval limits 0, there c. Based on the results, does echinacea appear to have any effe O A. Echinacea does not appear to have a significant effect o O B. Echinacea does appear to have a significant effect on the O C. Echinacea does appear to have a significant effect on the O D. The results are inconclusive. does not the null hypothesis. There does appear to be a significant difference between the two proportions. There Co te? sufficient evidence to support the claim that echinacea treatment has an effect. e is evidence that it lowers the infection rate. e is evidence that it increases the infection rate. evidence to support the claim that echinacea treatment has an effect.
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. Z= (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is ³ < (P₁-P₂) <. (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? Because the confidence interval limits 0, there the null hypothesis. There C c. Based on the results, does echinacea appear to have any effect on the infection rate? sufficient evidence to support the claim that echinacea treatment has an effect. appear to be a significant difference between the two proportions. There O A. Echinacea does not appear to have a significant effect on the infection rate. 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 appear to have a significant effect on the infection rate. There is evidence that it increases the infection rate. O D. The results are inconclusive. evidence to support the claim that echinacea treatment has an effect. is is not
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 44 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 77 of the 91 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. (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? the significance level of α = 0.01, so b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is < (P₁-P₂) <- (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? The P-value is Because the confidence interval limits c. Based on the results, does echinace OA. Echinacea does not appear to OB. Echinacea does appear to have OC. Echinacea does appear to have OD. The results are inconclusive. ▼0, there do not include include the null hypothesis. There ▼sufficient evidence to support the claim that echinacea treatment has an effect. appear to be a significant difference between the two proportions. There ct on the infection rate? the infection rate. infection rate. There is evidence that it lowers the infection rate. infection rate. There is evidence that it increases the infection rate. evidence to support the claim that echinacea treatment has an effect.