What are the relationships between a set of data collected, to the parameters of the trangular probability distribution.
I want to assume the data fit a triangular distribution, and thereby copute a 95% confidence interval for this data based on the parameters of the triangular distribution.
I.E. compute Y(avg)- c1*stdev and Y(avg)-c2*stdev.
How do I find c1 and c2 of a non-symmetric triangular distribution so that Y(ave) will be in that interval 95% of the time if I were to collect similar data about 100 times?

Thank you.
flatlanderx