Question

View Current Attempt in Progress An article in Knee Surgery, Sports Traumatology, Arthroscopy (2005, Vol. 13, pp. 273-279), considered arthroscopic meniscal repair with an absorbable screw. Results showed that for tears greater than 25 millimeters, 13 of 19 repairs were successful while for shorter tears. 22 of 31 repairs were successful. (a) Is there evidence that the success rate is greater for longer tears? Use a = 0.05. What is the P-value? (b) Calculate a one-sided 95% confidence bound on the difference in proportions that can be used to answer the question in part (a). (a) There evidence that the success rate is greater for longer tears. The P-value is Round your answer to four decimal places (e.g. 98.7654). (b) The one-sided 95% confidence bound is SP-P2. Round your answer to three decimal places (e.g. 98.765). Statistical Tables and Charts e Textbook and Media Attempts: 0 of 3 used Submit Answer Save for Later

Answer 1

Page No. Date ja) Hoo PizPQ Hii p>Pa Piz 13 -0.6842, P₂ 2 2 2 2 0.7093 19, 31 N, 219 No 231 P (posled peopoution) z X, X, 2 BP22 NEN, 31+19 zoo 7 Lz0.05 ㅋ Z- Pi-Po 20.6842 -0.7093 PU-PLAAT DA(1-07) (N, N) 2 - 00191 Z, 21064, p-value D05756 since doS756) 0.06, hence to is hat rejected (a) There is hos euidence that Success rate is greater for longen tear

Page No. Date p-value: 0.5756 b) asy. (I 1 Co I Pr - Po. - Zde (1-2) + (1-P) Pi-Pat ze ) + 117) N -0.289 LP, P2 20.238 The one sided 95% confidence bound is -0.2.89 L P - P2