3. If a random variable X has a chi square distribution with v degrees of freedom, then E(X)= vand Var (X) = 2v. Let X₁, X₂,..., X be a random sample from a N (u, o2) distribution and let 5² = ²₁ (₁-x)² and 5² = (X-X)² be two estimators of o². - n-1 n b) Find the Mean square error of ²

Q: 1 The discrete random variable X has Var (X) = 5 Find Var (4X – 3)

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