Fifteen randomly selected men were asked to run on a treadmill for 6 minutes. After the 6 minutes, their pulseswere measured and the following data were obtained: $$\begin{array} { r r r r r }
105 & 94 & 98 & 88 & 104 \
\hline 101 & 99 & 85 & 84 & 124 \
\hline 122 & 114 & 97 & 101 & 90
\end{array}$$
A) (93.7, 107.1); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 93.7 and 107.1 beats per minute.
B) (94.9, 105.9); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.9 and 105.9 beats per minute.
C) (94.2, 106.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.2 and 106.6 beats per minute.
D) (95.2, 105.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 95.2 and 105.6 beats per minute.

Question

Fifteen randomly selected men were asked to run on a treadmill for 6 minutes. After the 6 minutes, their pulseswere measured and the following data were obtained: $$\begin{array} { r r r r r } 
105 & 94 & 98 & 88 & 104 \
\hline 101 & 99 & 85 & 84 & 124 \
\hline 122 & 114 & 97 & 101 & 90
\end{array}$$
A) (93.7, 107.1); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 93.7 and 107.1 beats per minute.
B) (94.9, 105.9); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.9 and 105.9 beats per minute.
C) (94.2, 106.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.2 and 106.6 beats per minute.
D) (95.2, 105.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 95.2 and 105.6 beats per minute.

Quizplus · Accepted Answer

The Answer of Fifteen randomly selected men were asked to run on a treadmill for 6 minutes. After the 6 minutes, their pulseswere measured and the following data were obtained: $$\begin{array} { r r r r r } 
105 & 94 & 98 & 88 & 104 \
\hline 101 & 99 & 85 & 84 & 124 \
\hline 122 & 114 & 97 & 101 & 90
\end{array}$$
A) (93.7, 107.1); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 93.7 and 107.1 beats per minute.
B) (94.9, 105.9); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.9 and 105.9 beats per minute.
C) (94.2, 106.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 94.2 and 106.6 beats per minute.
D) (95.2, 105.6); we are 95% confident that the mean pulse rate of men after 6 minutes of exercise is between 95.2 and 105.6 beats per minute.

Fifteen Randomly Selected Men Were Asked to Run on a Treadmill