Physicians measured the effectiveness of leech therapy on arthritis…

Question Answered step-by-step Physicians measured the effectiveness of leech therapy on arthritis… Physicians measured the effectiveness of leech therapy on arthritis pain. (I’m not making this up! Seehttp://www.annals.org/cgi/content/full/139/9/724 (Links to an external site.) )They took a sample of 51 patients. They assigned a group of 24 patients to receive “leech therapy,” and a control group of 27 patients to receive a conventional pain-relief therapy (diclofenac gel).One week after the leech treatment (it was one treatment lasting a little over an hour involving 4 to 6 leeches), the leech group had a mean pain index of 19.3 with a standard deviation of 12.2.After one week of the other treatment, the control group had a mean pain index of 42.4 with standard deviation of 19.7.What would the value of the t-statistic be to test the null hypothesis that the effect of treatment by leeches is the same as the effect of conventional treatments? Math Statistics and Probability MATH 243 Share QuestionEmailCopy link Comments (0)