Question 7 The Gamma distribution Gamma(a, B ) is given by Bana-le-BA fa (1; Q, B) = where a and B are parameters of the distribution, and (.) is the Gamma function (see Lecture 1 if you don't remember what this function is), with derivative denoted by ' (.). Show that it is a conjugate prior of Poisson()), i.e., when the observations X; for 1