ref: 6e4fa04bdf2fca01769ae88d6044e49b724fbf51
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