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## Homework Statement

Let the independent random variables X1,X2,X3 have the same cdf F(x). Let Y be the middle value of X1,X2,X3. Determine the cdf of Y.

## Homework Equations

F(x) = P(X<=x) = ∫-inf to x f(y)dy

## The Attempt at a Solution

I don't understand the question, what does it exactly mean when Y is the middle value of X1,X2,X3? I'm not exactly sure where to start. Can somebody help?