An article in knee surgery, sports traumatology, arthroscopy (2005, vol. 13, pp. 273–279)"arthroscopic meniscal repair with an absorbable screw: results and surgical technique" showed that only 25 out of 37tears (67.6%) located between 3 and 6 mm from themeniscus rim were healed.

(a) calculate a 90% two-sided confidence intervalon the proportion of such tears that will heal. round the answersto 3 decimal places.

? ≤ p < ?

(b) calculate a

90% lower confidence bound on the proportion ofsuch tears that will heal. round the answer to 3 decimalplaces.

? ≤ p