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5) Suppose Xi Normal (0,i21), where i=1,2,,9 and X1,X2,,X9 are independent to each other. Let Y
be a random variable defined as Y=i=19iXi. Find the variance of Y.

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5 Suppose Xi Normal 0i21 where i129 and X1X2X9.pdf

  • 1. 5) Suppose Xi Normal (0,i21), where i=1,2,,9 and X1,X2,,X9 are independent to each other. Let Y be a random variable defined as Y=i=19iXi. Find the variance of Y.