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normal interval, MARCH
rear march
"Close interval, dress right (or left), dress!"
Normal interval, close interval, and double intervalWhen forming a squad, there are three interval choices that can be chosen. Arm's length is one of the choices.
You find z = (u - m)/s and the look up the Pr(Z > z) in the tables of cumulative probability of the normal distribution. Note that the tables only give the probabilities for Pr(Z <= z) for z >=0. So Pr(Z > z) = 1 - Pr(Z<=z). Also, if z < 0 then you will need to use the symmetry of Z about the value 0.