Let Y₁ and Y₂ have a joint density function f(₁.9₂) = {e-0₂ + y2) 0, a) What is P(Y₁<1, Y₂>5) b) What is P(Y₁ + Y₂<3) Se-(₁+y₂), y₁ > 0, y₁ > 0 elsewhere

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