<prompt> Fasting blood sugar FBS of a population is known to be normally distributed, with a mean of 105 mg. SD 10. Thus 95 of the population will have FBS within-104 and 10695 and 11585 and 12575 and 135  <response>: Ref:Parks 23rd edition pg 849. 1SD : confidence limit 68 2SD : confidence limit 95 3SD : confidence limit 99.7 95 means - 2SD Here SD 10 So - 20 So, between 85 and 125 