Mathematics, 11.07.2021 05:30, Zgt

Một lô hàng gồm 1000 sản phẩm, trong đó có 10 phế phẩm. Lấy ngẫu nhiên ra 20 sản phẩm. Tìm xác suất để cho trong 20 sản phẩm lấy ra:
a) Có 5 phế phẩm;
b) Bị cả 10 phế phẩm;
c) Có đúng 5 chính phẩm.

Answers: 3

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Một lô hàng gồm 1000 sản phẩm, trong đó có 10 phế phẩm. Lấy ngẫu nhiên ra 20 sản phẩm. Tìm xác suất...

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Một lô hàng gồm 1000 sản phẩm, trong đó có 10 phế phẩm. Lấy ngẫu nhiên ra 20 sản phẩm. Tìm xác suất để cho trong 20 sản phẩm lấy ra: a) Có 5 phế phẩm; b) Bị cả 10 phế phẩm; c) Có đúng 5 chính phẩm.

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Một lô hàng gồm 1000 sản phẩm, trong đó có 10 phế phẩm. Lấy ngẫu nhiên ra 20 sản phẩm. Tìm xác suất để cho trong 20 sản phẩm lấy ra:
a) Có 5 phế phẩm;
b) Bị cả 10 phế phẩm;
c) Có đúng 5 chính phẩm.