<prompt> Systolic BP of a group of 200 people follows normal distribution. Mean BP is 120 mm Hg and standard detion 10. Which of the following is true-68 of people have BP between 110-130 mm Hg95 of people have BP between 110-130 mm Hg68 of people have BP between 100-140 mm Hg99 of people have BP between 100-140 mm Hg  <response>: Ref:Parks 23rd edition pg 849. 1SD : confidence limit 68 2SD : confidence limit 95 3SD : confidence limit 99.7 68 have BP : 110 - 130 95 have BP : 100 - 140 99.7 have BP : 90 - 150 