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In: Statistics and Probability

A randomizesd controlled trial was designed to compare effectiveness of splinting versus surgery in the treatment...

A randomizesd controlled trial was designed to compare effectiveness of splinting versus surgery in the treatment of carpal tunnel syndrome. Results are given in the table below. The results are based on evaluations made one year after the treatment.
Using a 0.01 significance level, test the claim that success is insependent of the type of treatment.
Sucessful Treatment Unsuccessful Treatment
Splinting Tx. 60 23
Surgery Tx. 67 6

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