As part from my H.W I got the following question and I just can not do anything, I have no idea where to start. can anyone help me?
The maximum $S = max X_i$ is sufficient statistic for the uniform distribution $U[0,\theta]$.
The estimator $T = 2X_i$ is unbiased for $\theta$.
I asked to calculate the estimator: $T' = E(T|S)$ of Rao–Blackwell theorem and compare the Variances