Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the 42 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 94 of the 110 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? c. Ho: P1 SP2 H: P1 # P2 *F. Ho P1 =P2 H: P1 #P2 O B. Ho: P1 = P2 O A. Ho: P1 = P2 H: P1 P2 O D. Ho: P1 P2 H1: P1 = P2 O E. Ho: P1 2 P2 H: P1 #P2 Identify the test statistic. (Round to two decimal places as needed.)

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Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the 42 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 94 of the 110 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 B. Ho: P1 = P2
H: P1 > P2
XC. Ho: P1 SP2
H: P, # P2
O A. Ho: P1 = P2
H1: P1 <P2
O D. Ho: P1 + P2
H1: P1 = P2
O E. Ho: P1 2 P2
H: P1 # P2
F. Ho: P1 = P2
H: P1 #P2
Identify the test statistic.
z=
(Round to two decimal places as needed.)
Transcribed Image Text:Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the 42 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 94 of the 110 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 B. Ho: P1 = P2 H: P1 > P2 XC. Ho: P1 SP2 H: P, # P2 O A. Ho: P1 = P2 H1: P1 <P2 O D. Ho: P1 + P2 H1: P1 = P2 O E. Ho: P1 2 P2 H: P1 # P2 F. Ho: P1 = P2 H: P1 #P2 Identify the test statistic. z= (Round to two decimal places as needed.)
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