Identify the test statistic. Identify the​ P-value construct the 98​% confidence interval for p1−p2

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Identify the test statistic.

Identify the​ P-value

construct the 98​% confidence interval for p1−p2

In a study of treatments for very painful "cluster" headaches, 157 patients were treated with oxygen and 142 other patients were given a placebo consisting of ordinary air. Among the 157 patients in the oxygen treatment group, 114 were free from headaches
15 minutes after treatment. Among the 142 patients given the placebo, 20 were free from headaches 15 minutes after treatment. Use a 0.01 significance level to test the claim that the oxygen treatment is effective. Complete parts (a) through (c) below.
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the null and alternative hypotheses for the hypothesis test?
B. Ho: P1 =P2
O C. Ho: P1 2 P2
H1: P, # P2
O A. Ho: P1 # P2
H1: P1 = P2
H: P1 > P2
O D. Ho: P1 <P2
O E. Ho: P1 =P2
O F. Ho: P1 = P2
H1: P1 #P2
H,: P1 <P2
H1: P, # P2
Identify the test statistic.
Z=
(Round to two decimal places as needed.)
Transcribed Image Text:In a study of treatments for very painful "cluster" headaches, 157 patients were treated with oxygen and 142 other patients were given a placebo consisting of ordinary air. Among the 157 patients in the oxygen treatment group, 114 were free from headaches 15 minutes after treatment. Among the 142 patients given the placebo, 20 were free from headaches 15 minutes after treatment. Use a 0.01 significance level to test the claim that the oxygen treatment is effective. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the null and alternative hypotheses for the hypothesis test? B. Ho: P1 =P2 O C. Ho: P1 2 P2 H1: P, # P2 O A. Ho: P1 # P2 H1: P1 = P2 H: P1 > P2 O D. Ho: P1 <P2 O E. Ho: P1 =P2 O F. Ho: P1 = P2 H1: P1 #P2 H,: P1 <P2 H1: P, # P2 Identify the test statistic. Z= (Round to two decimal places as needed.)
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