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3. A certain market has both an express checkout line and a superexpress checkout line. Let X, denote the number of customers
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@ P(x2+1,x2= 1)PIC®.X2); (0,0),(0,19,0,0), (1,1)) = 0.08+ 0.07+0.06+0.15-0.36) P(x, = x2) P[(*.*,)=(0,07,0,1),(2,2), (3,3)) =

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