ref: 374e6e87b1b13492438a2c030edd191cbebe94dc
dir: sm2/stt/variancedist.2.t
For many types of applications, the interval containing most of the observations is... .Bp For many types of applications, the interval containing most of the observations is: .EQ left [ X highbar - 2s ; X highbar + 2s right ] .EN