Question 1040928: Use the following list of resting pulse rates of 55 people. The mean of these rates is 73.5, and the standard deviation is approximately 13.2.
50, 51, 51, 53, 53, 53, 55, 56, 56, 57, 58, 58, 59, 59, 60
60, 60, 60, 62, 62, 64, 65, 65, 65, 68, 68, 69, 71, 71, 72
72, 73, 75, 76, 77, 78, 78, 81, 81, 81, 82, 82, 82, 82, 83
85, 85, 85, 88, 88, 90, 90, 91, 91, 92
Determine the pulse rates that are within 1 standard deviation of the mean. What percentage of the total to the nearest 0.1 percent do these rates represent?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Use the following list of resting pulse rates of 55 people. The mean of these rates is 73.5, and the standard deviation is approximately 13.2.
50, 51, 51, 53, 53, 53, 55, 56, 56, 57, 58, 58, 59, 59, 60
60, 60, 60, 62, 62, 64, 65, 65, 65, 68, 68, 69, 71, 71, 72
72, 73, 75, 76, 77, 78, 78, 81, 81, 81, 82, 82, 82, 82, 83
85, 85, 85, 88, 88, 90, 90, 91, 91, 92
Determine the pulse rates that are within 1 standard deviation of the mean.
From 73.5-13.2 up to 73.5+13.2
60.3 up to 86.7
-------
-----------------------
percentage of the total to the nearest 0.1 percent do these rates represent?
# in that interval:: 30
Percentage:: 30/55 = 0.5455 = 54.55%
------------------
Cheers,
Stan H.
------------
|
|
|
