This is my first post in this forum; I hope someone can help me with this --thanks in advance for reading!

I'm trying to find the joint probability distribution of two variables where I only know their marginal probability distributions.

More specifically, I'm interested in the joint distribution of two random variables X and Y, given that X is normally distributed (with mean Mx and deviation Sa), and Y= exp[X] (i.e. a log-normal distribution).

I hope it makes sense.

Thanks!