I would like to Mention here that I have given below, through using RV Sigma or the Standard Deviation of the Normal Curve - The Normal Curve that has been used for over 300 years; it's probabilities and Z values can now be given,
for any % Normal Probability by using it's Standard Deviation only.
1) Notice the Limits of Integration for g(x) which is an equivalent area to the Normal from 0 to 1.
2) Notice the Linear Line which gives both the Z -values as slope and the Standard Deviation as the Y - intercept.
3) Notice the Linear Line " V " has a mean position of σ² where the Y - intercept = 0.
4) Notice the Formulas and Values associated with those Formulas.

Type Standard Deviation Values into the input Box above.