Silicone implant augmentation rhinoplasty is used to correct congenital nose deformities. The success of the procedure depends o
n various bio-mechanical properties of the human nasal periosteum and fascia. An article reported that for a sample of 14 (newly deceased) adults, the mean failure strain (%) was 26.0, and the standard deviation was 3.5. (a) Assuming a normal distribution for failure strain, estimate true average strain in a way that conveys information about precision and reliability. (Use a 95% confidence interval. Round your answers to two decimal places.) %, %
(b) Predict the strain for a single adult in a way that conveys information about precision and reliability. (Use a 95% prediction interval. Round your answers to two decimal places.) %, % How does the prediction compare to the estimate calculated in part (a)? The prediction interval is the same as the confidence interval in part (a). The prediction interval is much narrower than the confidence interval in part (a). The prediction interval is much wider than the confidence interval in part (a).
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