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Science-Related Homework Help Statistics and Probability Topic started by: SPP24 on Aug 30, 2019



Title: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...
Post by: SPP24 on Aug 30, 2019
We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. One group gets a homeopathic remedy and the other a placebo. After 20 minutes we ask them to rate their headache pain as "no change", "somewhat better", "much better", or "gone". What is the appropriate test?

▸ 2-proportion z-test

▸ χ2 test of homogeneity

▸ 2-sample t-test

▸ matched pairs t-test

▸ χ2 test of independence


Title: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...
Post by: mace on Aug 30, 2019
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