Cho bảng phân phối xác suất của biến ngẫu nhiên hai chiều (X, Y) như sau:
Y X 1 2 3
0 m 0,3 0...
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Mathematics, 14.08.2021 14:00 meramera50
Cho bảng phân phối xác suất của biến ngẫu nhiên hai chiều (X, Y) như sau:
Y X 1 2 3
0 m 0,3 0.05
1 0,2 0,15 0,1
1/ Tìm m ?
2/ Tính P( X+Y=1)=?
3/ Tìm E (X) = ?
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