Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 43 of the 49 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 79 of the 96 subjects developed rhinovirus infections. Use a 0.05 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? A. H0: p1≤p2 H1: p1≠p2 B. H0: p1=p2 H1: p1p2 Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value=

Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 43 of the 49 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 79 of the 96 subjects developed rhinovirus infections. Use a 0.05 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? A. H0: p1≤p2 H1: p1≠p2 B. H0: p1=p2 H1: p1p2 Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value=

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Description: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea,43of the49subjects treated with echinacea developed rhinovirus infections. In a placebo group,79of the96subjects developed rhinovirus infections. Use a0.05signi

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter87: An Introduction To G- And M-codes For Cnc Programming

Section: Chapter Questions

Problem 10A

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea,

of the

subjects treated with echinacea developed rhinovirus infections. In a placebo group,

of the

subjects developed rhinovirus infections. Use a

0.05

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?

H0:

p1≤p2

H1:

p1≠p2

H0:

p1=p2

H1:

p1<p2

H0:

p1≠p2

H1:

p1=p2

H0:

p1=p2

H1:

p1≠p2

H0:

p1≥p2

H1:

p1≠p2

H0:

p1=p2

H1:

p1>p2

Identify the test statistic.

(Round to two decimal places as needed.)

Identify the P-value.

P-value=

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