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-
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
68% of people have BP between 110-130 mm Hg
95% of people have BP between 110-130 mm Hg
68% of people have BP between 100-140 mm Hg
99% of people have BP between 100-140 mm Hg
Biostatistics