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In a study of treatments for very painful​ \"cluster\" headaches, 159159 patients were treated with oxygen and 154154 other patients...

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Statistics

In a study of treatments for very painful​ \"cluster\"headaches,

159159

patients were treated with oxygen and

154154

other patients were given a placebo consisting of ordinary air.Among the

159159

patients in the oxygen treatment​ group,

111111

were free from headaches 15 minutes after treatment. Amongthe

154154

patients given the​ placebo,

3434

were free from headaches 15 minutes after treatment. Use a

0.050.05

significance level to test the claim that the oxygen treatmentis effective. Complete parts​ (a) through​(c) below.

Answer & Explanation Solved by verified expert
3.8 Ratings (517 Votes)
p1 111159 06981Sample Proportion ofoxygen treatment group free fromheadachen1 159Sample size of oxygen treatmentgroupp2 34154 02208Sample    See Answer
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