For a Dirichlet variable, I know the means and covariances, that is,
E[X_i] = \alpha_i/\alpha_0
Cov[X_i,X_j] = \frac{ \alpha_i (\alpha_0I[i=j] - \alpha_j)}{\alpha_0^2(\alpha_0 + 1)}
But how can I prove these facts?
Hello all,
Does anyone know where I could find a formal proof that
\frac{\text{MS between}}{\text{MS within}}
has a F distribution under the null in ANOVA?
Homework Statement
W(\theta - \delta) the loss function.
\theta the true parameter.
\delta an estimator of \theta
W a smooth, non-negative, symmetric, convex function.
p(\theta | x) the posterior density of the parameter \theta.
Prove that, for normal posterior density p(\theta | x)...
Homework Statement
Let (R, \mathcal{B}, \mu_F) be a measure space, where \mathcal{B} is the Borel \sigma-filed and \mu_F is the Lebesgue-Stieljes measure generated from
F(x) = \sum^\infty_{n=1}2^{-n}I(x \ge n^{-1}) + (e^{-1} - e^{-x})I(x \ge 1)
Use the uniqueness of measure extension in...