1st box- include or do not include 2nd box- not equal or equal 3rd box- positive

Question

1st box- include or do not include 2nd box- not equal or equal 3rd box- positive and negative or only positive or only negative 4th box- higher or the same or lower 2of complete Hwy Score: 81.59%, 5.... Score: 0.46 of 1 pt 9.2.15-T EQuestion Help In a study of treatments for very painful "cluster" headaches, 140 patients were treated with oxygen and 153 other patients were given a placebo consisting of ordinary air. Among the 140 patients in the oxygen treatment group, 110 were free from headaches 15 minutes after treatment. Among the 153 patients given the placebo, 21 were free from headaches 15 minutes after treatment. Use a 0.05 significance level to test the claim that the oxygen treatment is effective. Complete parts (a) through (c) below. than the cure rate for those given a placebo. b. Test the claim by constructing an appropriate confidence interval. The 90% confidence interval is 0.575 (p1-p2) 0.722 (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? 0, it appears that the two cure rates are Because the confidence interval limits L Because the confidence intervallimits include values, it appears v for the oxygen treatment than for the placebo. that the cure rate is

Explanation / Answer

Because the confidence interval limits do not include 0, it appears that the two cure rates are not equal. Because the confidence interval limits include only positive values, it appears that the cure rate is higher for the oxygen treatment than for the placebo.

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