SOLUTION: I am just not understanding this and my textbook is not clicking with me. Any help would be appreciated. For a group of 11 college football players, the mean heart rate after a

Algebra ->  Probability-and-statistics -> SOLUTION: I am just not understanding this and my textbook is not clicking with me. Any help would be appreciated. For a group of 11 college football players, the mean heart rate after a       Log On


   



Question 308674: I am just not understanding this and my textbook is not clicking with me. Any help would be appreciated.
For a group of 11 college football players, the mean heart rate after a morning workout session was 93 beats per minute and the standard deviation was 8. Find the 95% confidence interval of the true mean for all college football players after a workout session.

Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
The 95% confidence level means all values within 2 standard deviations of the mean. Fi the standard deviation is 8, this means you want all values within an interval of 16 from the mean which is 93.

93-16=77
93+16=109

The interval is from 77 to 109.

Dr. Robert J. Rapalje, Retired