Silicone implant augmentation rhinoplasty is used to correct congenital nose deformities. the success of the procedure depends on various biomechanical properties of the human nasal periosteum and fascia. an article reported that for a sample of 12 (newly deceased) adults, the mean failure strain (%) was 24.0, and the standard deviation was 3.2. assuming a normal distribution for failure strain, estimate true average strain in a way that converys information about precision and reliability.