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...


Identify the test statistic.


Identify the​ P-value


construct the 98​% confidence interval for p1−p2


In a study of treatments for very painful
P2 O D. Ho: P1
Extracted 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

Jun 09, 2022
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