Be100% sure of the solution, please Suppose we have a random sample of size \( 2 n \) from a population denoted by \( X \), and \( E(X)=\mu \) and \( V(X)= \) \( \sigma^{2} \). Let \[ \bar{X}_{1}=\frac{1}{2 n} \sum_{i=1}^{2 n} X_{i} \qu 2 answers