Questions 16-17 One measure of physical fitness is the amount of time it takes for the pulse rate to return to normal after exercise, which is called the pulse-recovery time. A random sample of 15 women aged 40-50 exercised on stationary bicycles for 30 minutes. The amount of time it took for their pulse rates to return to pre- exercise levels was measured and recorded. The sample mean was 16.5 minutes and the sample standard deviation was 3.27 minutes. 16. 17. Find the 95% confidence interval for the mean pulse-recovery time for all women aged 40-50. A (14.69, 18.31) B (14.89, 18.51) C (15.09, 18.71) D (15.29, 18.91) E (15.49, 19.11) Find the 99% confidence interval for the mean pulse-recovery time for all women aged 40-50. A (14.19, 19.21) B (14.39, 19.41) C (14.59, 19.61) D (13.99, 19.01) E (14.79, 19.81)