Report - Discrete Random Variables - University of Hong Kongelec2844/sp21/lec2.pdfX pX(0) = 0.2 pX(100) = 0.8·0.5 pX(300) = 0.8·0.5 E(X) = 0·0.2+100·0.8·0.5+300·0.8·0.5 = 160 pX(0) =

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