Computes and plots a truncated Gaussian distribution, in its interval Xa < X < Xb.
(The parameters μ, σ, Xa and Xb all have the same units as X, i.e., [X], whereas the pdf, y, has [X]−1.)
• Google "truncated normal"
• 1819-09-23: Fizeau, Armand-Hippolyte-Louis (1896-09-18).