The sum of squared deviation is least from________?

Which of the following case is true for hyper geometric distribution________?

Var (kY)= ________?

The Wilcoxon, Rank-Sum test used to compares________?

Let X1,X2,......,Xn be a random sample from a density,,,, f(x ι θ) where θ is a value of the random variable Θwith known density gΘ(θ) Then the estimator ∏(θ) with.../ respect to the prior gΘ(θ) is define as________E[∏(θ)ιX1,X2,.....,Xn] is called?

If p= 0.1 and n = 400 then mean ________?