ref: 943914d639b29fbd6a40d3df941c9947a5b555e9
dir: /stt/variancedist.t/
For many types of applications, the interval containing about two thirds of the observations is... .Bp For many types of applications, the interval containing about two thirds of the observations is: .EQ left [ X highbar - s ; X highbar + s right ] .EN