Question: if Y1 and Y2 are random variables (sample size 2) from N(0,). Two estimators:1=S^2,2=Y1^2/2 +Y2^2/2. How to calculate the variances of these estimators (Var1 and

if Y1 and Y2 are random variables (sample size 2) from N(0,). Two estimators:1=S^2,2=Y1^2/2 +Y2^2/2. How to calculate the variances of these estimators (Var1 and Var2). Thanks

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