Part A. Let X and Y be two i.i.d. random variables that are exponentially distributed with 0.5e-x/2 an x0 0 otherwise 6. Given W- X+Y. Find the MGF of W -23 a. e2sx b. e C. d. 7. Given W-X +Y. Find Ew] a. 4 b. 8 c. 12 d. 16 e. 24
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