Let X1, ... X50 be independent random variables following N(0, 1) distribution. Let \(Y=\displaystyle\sum_{i=1}^{50} X_i^2\), and E(Y) = a and Var(Y) = b.Then, the ordered pair (a, b) is :

Let X1, ... X50 be independent random variables following N(0, 1) dist

1.	Let X1, ... X50 be independent random variables following N(0, 1) distribution. Let \(Y=\displaystyle\sum_{i=1}^{50} X_i^2\), and E(Y) = a and Var(Y) = b.Then, the ordered pair (a, b) is :
A.	(50, 100)
B.	(50, 50)
C.	(25, 50)
D.	(25, 100)
Answer» B. (50, 50)

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Let X1, ... X50 be independent random variables following N(0, 1) distribution. Let \(Y=\displaystyle\sum_{i=1}^{50} X_i^2\), and E(Y) = a and Var(Y) = b.Then, the ordered pair (a, b) is :

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