2 balls are chosen randomly from an urn containing 8 white, 4 black, 2 orange ball. Suppose you win 2 dollars for each black ball and lose 1 dollar for each white ball selected. Let X be the net winning , Find
a) S_x
my answer is
for a)
(-2,1,2)

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b) asked for pmf
P_x (8/14)^2 x=-2
(4/14)*(8/14) x=1
(4/14)^2 x=2

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