The most common injury that occurs among mountain climbers is trauma to the lower extremity (leg). Consequently, rescuers must be proficient in immobilizing and splinting of fractures. The researchers examined the likelihood of needing certain types of splints. A Mountain Rescue study reported that there were 26 shaft splints needed among 189 live casualties. The researchers will use this study to estimate the proportion of all mountain casualties that require a femoral shaft splint.Find a lower bound for the true proportion using a 90% confidence interval. Round your final answer to three decimal places as needed.