X1 x2 are random samples of size 3 from a normal

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X1, X2 are random samples of size 3 from a Normal distribution. Use the moment generating function method to prove that the sum Y = X1 + X2 is normally distributed and specify the parameters. Then show (X1+X2) /2 has normal distribtion and show parameters. Show work please

Reference no: EM13635926

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