ref: 9257482d28dbf820a598cfd3bc7f6f3a3e63b95a
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