Suppose the joint PMF given in the table. (a) Find P(Y ≥100). (b) Determine PX (x) and PY ㅍ(y). (c) Check if X and Y are independent. PX,Y(x,y) y=0 y=100 y=200 x=100 0.20 0.10 0.20 x=250 0.05 0.15 0.3

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