This function is the inverse of the non-standard normal distribution function. Given a probability, mean and standard deviation, this function will return the bounds of the area under a non-standard normal curve.
The tail menu is used to select an area under the curve.
Percentile is the area (percentage) under the non-standard normal curve
µ is the mean of the curve
The next box is used for the standard deviation of the curve.
The result is the bound of the area that correlates to the percentile.
