= 1 = 2 = 3 = 4 - 5 6 7 8 9 10 11 12 13 Hip surgery: In a sample of 127 hip surgeries of a certain type, the average surgery time was 137.7 minutes with a standard deviation of 23.1 minutes. Part: 0 / 2 Part 1 of 2 (a) Construct a 95% confidence interval for the mean surgery time for this procedure. Round your answers to one decimal place. A 95% confidence interval for the mean surgery time for this procedure is X Part: 1 / 2 Part 2 of 2 (b) If a 99.9% confidence interval were constructed with these data, would it be wider or narrower than the interval constructed in part (a)? Explain. The new confidence interval would be (Choose one) |than the interval constructed in part (a). X 5