anhmint939 anhmint939

19-09-2022
Mathematics

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Trong một cái bát có 5 hạt đậu trong đó có 2 hạt đỏ.Lấy ngẫu nhiên ra 2 hạt.Gọi X là số hạt đậu đỏ được lấy ra
a.Lập bảnG phân phối xác suất của X
b.Viết biểu thức hàn phân phối của X
c.Tính E(X) vả VAR(X)

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