mild correction regarding Exam 1 (e)

A certain detail of my text for Exercise 1(e) didn't come out well and might cause confusion. The main points are in order, by all means -- but since I've said that h(v) is the density for V, not for \sqrt{V}, the density for \theta ought to be expressed as the integral of \phi(\theta / \sqrt{v}) (1/\sqrt{v}) h(v) d v.

Nils