Also this is the basic code implementation of the formulas....
Regards
Function snorm(z As Double) as double
Dim pi as double
pi=3.14159265358979
Dim a1 as double,a2 as double,a3 as double,a4 as double,a5 as double,k as double,w as double
a1 = 0.31938153
a2 =...