<prompt> Mean 1.96 SD include following of values in a distribution: September 20126899.5088.7095  <response>: Ans: D i.e. 95 96 is the approximate value of the 97.5 percentile point of the normal distribution used in probability and statistics. 95 of the area under a normal curve lies within roughly 1.96 standard detions of the mean, and due to the central limit theorem, this number is therefore used in the construction of approximate 95 confidence intervals. 