Thanks for reaching out on this Ciara! I am looking out for Normdist Formula, which can calculate and give me the confidence value. I am not looking out for Normal Curve here. Thanks.
Ah ok, thanks for clarifying, Swamy! I searched the ideas for normdist but no matches, so please feel free to create a new idea and add your vote.
I also found a few links that may be of interest...
Just to add to this here, as the author of the "Cumulative Distribution Function (Normal Distribution)" post mentioned by Ciara above, based on your requirement, I am confident that this will help you.