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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 20 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 3.46 minutes. 11. Find the 95% confidence interval for the mean pulse-recovery time for all women aged 40-50. (14.97, 18.03) в (14.92, 18.08) C (14.88 , 18.12) (14.84, 18.16) (14.80, 18.20) D E 12. Find the 99% confidence interval for the mean pulse-recovery time for all women aged 40-50. A. (14.29, 18.71) B (14.41, 18.59) C (14.34, 18.56) (14.23 , 18.77) (14.17, 18.83) E

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 20 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 3.46 minutes. 11. Find the 95% confidence interval for the mean pulse-recovery time for all women aged 40-50. (14.97, 18.03) в (14.92, 18.08) C (14.88 , 18.12) (14.84, 18.16) (14.80, 18.20) D E 12. Find the 99% confidence interval for the mean pulse-recovery time for all women aged 40-50. A. (14.29, 18.71) B (14.41, 18.59) C (14.34, 18.56) (14.23 , 18.77) (14.17, 18.83) E

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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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 20 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 3.46 minutes. 11. Find the 95% confidence interval for the mean pulse-recovery time for all women aged 40-50. A (14.97, 18.03) в (14.92 , 18.08) (14.88 , 18.12) (14.84 , 18.16) (14.80 , 18.20) D E 12. Find the 99% confidence interval for the mean pulse-recovery time for all women aged 40-50. (14.29 , 18.71) (14.41 , 18.59) (14.34 , 18.56) (14.23 , 18.77) A B C E (14.17, 18.83)
Transcribed Image Text: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 20 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 3.46 minutes. 11. Find the 95% confidence interval for the mean pulse-recovery time for all women aged 40-50. A (14.97, 18.03) в (14.92 , 18.08) (14.88 , 18.12) (14.84 , 18.16) (14.80 , 18.20) D E 12. Find the 99% confidence interval for the mean pulse-recovery time for all women aged 40-50. (14.29 , 18.71) (14.41 , 18.59) (14.34 , 18.56) (14.23 , 18.77) A B C E (14.17, 18.83)
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