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, 15 of 17 (88%) repairs were successful while for shorter tears, 23 of 31 (74%) repairs were successful.

Is there evidence that the success rate is greater for longer tears? Use α = 0.05 . What is the P -value?