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X1 and X2 are iid exponential (2) random variables and Z=max(X1 , X2). What is E[Z]?...

X1 and X2 are iid exponential (2) random variables and Z=max(X1 , X2). What is E[Z]?
(Hint: Find CDF and then PDF of Z)

  • A. 3/2

  • B. 3

  • C. 1/2

  • D. 3/4

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