Question: CAN YOU PLEASE ANSWER A AND B 4 4. (20) Let (X1, X2, Xa)' ~ Na(#, E), where a = (0, 1, -1)' and E

CAN YOU PLEASE ANSWER A AND B

4 4. (20) Let (X1, X2, Xa)' ~ Na(#, E), where a = (0, 1, -1)' and E = 8 0 0 2 (a) (10) Find the distribution of Y = (X1 + X2 + 2X3)/3. (b) (10) Find the distribution of R = (X1 + X3 + 1)?/(X2 -1)3. [Note: R follows a very common distribution; identify the distribution and justify your answer.]

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