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Mathematics Clinic => Statistics => Topic started by: mia on Aug 31, 2019

Title: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...
Post by: mia on Aug 31, 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: popopong on Aug 31, 2019: χ² test of homogeneity
Title: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...
Post by: mia on Aug 31, 2019: TY
Title: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...
Post by: popopong on Aug 31, 2019: You're welcome
Title: Re: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pill
Post by: RIVER RAWLE on Apr 1, 2020: thank you
Title: Re: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pill
Post by: Jessica Gilbert on Jan 13, 2021: Thank you!
Title: Re: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pill
Post by: Amy Cho on Mar 26, 2021: Thank you
Title: Re: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pill
Post by: Abrahim Baluch on Apr 9, 2021: Thank you