Otani and Kishi (A-12) studied seven subjects with diabetic macular edema. They measured the foveal thickness...

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Otani and Kishi (A-12) studied seven subjects with diabetic macular edema. They measured the foveal thickness (um) in seven eyes pre- and post-unilateral vitrectomy surgery. The results are shown in the following table: Subject 1 2 3 4 5 6 7 Pre-op Foveal Thickness (μm) Post-op Foveal Thickness (μm) 690 840 470 690 730 500 440 Source: Data provided courtesy of Tomohiro Otani, M.D. Use the Wilcoxon signed-rank test to determine whether one should conclude that the surgery is effective in reducing foveal thickness. Let a = = .05. What is the p value? 200 280 230 200 560 210 200 Otani and Kishi (A-12) studied seven subjects with diabetic macular edema. They measured the foveal thickness (um) in seven eyes pre- and post-unilateral vitrectomy surgery. The results are shown in the following table: Subject 1 2 3 4 5 6 7 Pre-op Foveal Thickness (μm) Post-op Foveal Thickness (μm) 690 840 470 690 730 500 440 Source: Data provided courtesy of Tomohiro Otani, M.D. Use the Wilcoxon signed-rank test to determine whether one should conclude that the surgery is effective in reducing foveal thickness. Let a = = .05. What is the p value? 200 280 230 200 560 210 200

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