college biostatistics
posted by donna .
if the mean bp is 110 and the standard deviation is 15 where would 95% of population be

http://davidmlane.com/hyperstat/z_table.html
Try in the region of 135 
Also you can find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion indicated. Insert Z score value in the formula below and solve for the score.
Z = (scoremean)/SD = (score110)/15
This method does not require a computer or electricity.