Saturday, June 11, 2016

probability - Expected value of a non-negative random variable

How do I prove that ∫∞0Pr(Y≥y)dy=E[Y] if Y is a non-negative random variable?

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analysis - Injection, making bijection

I have injection f:A→B and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...