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Mathematics, 14.06.2021 14:00 Madeline6117

Câu 3. Một lô hàng có 439 sản phẩm loại I và 179 sản phẩm loại II. Lấy ngẫu nhiên ra 5 sản phẩm có hoàn lại. Gọi X là số sản phẩm loại I lấy được.
a) Lập bảng phân phối xác suất của X;
b) Tìm kỳ vọng và phương sai của X.

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Câu 3. Một lô hàng có 439 sản phẩm loại I và 179 sản phẩm loại II. Lấy ngẫu nhiên ra 5 sản phẩm có...

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