Q. 45.0( 1 Vote )

If X and Y are tw

Answer :

Given,

To Find: Write the expression for the standard deviation of Y.


Explanation: We have


Mean (y) =


We can write as Mean (y) =


Mean (y) =


Var(X) =


But, Var(X)=


Then, Var(Y) =


Now, Substitute the value of yiand Y, then we get








Hence, Proved


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