The fourth task force report on Blood pressure control in children [2] reports blood-pressure norms for children by age and sex group. The estimated mean +/- Standard deviation for 17 year old boys for DBP is 67.9 +- 11.6 mm HG based on a large sample. One approach for defining elevated blood pressure is to use 90 mm Hg- the standard for elevated adult blood pressure-as the cutoff. What percentage of 17 year old boys would be found to have elevated blood pressure, using this approach?

The fourth task force report on Blood pressure control in children [2] reports blood­pressure norms for children by age and sex group. The estimated mean +/­ Standard deviation for 17 year old…