You choose a point (X,Y ) uniformly at random in the unit square S = {(x, y)

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You choose a point (X,Y ) uniformly at random in the unit square S = {(x, y) ∈ R2 : 0 ≤ x ≤ 1, 0 ≤ y ≤ 1}.

Let A be the event {(x, y) ∈ S : |x −y| ≤ 1/2} and B be the event {(x, y) ∈ S : y ≥ x}.

a. Show sets A and B in the x-y plane.

b. Find P(A) and P(B).

c. Are A and B independent?

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