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Mathematics, 18.06.2021 17:20 Jasten

Một cỗ máy có 3 bộ phận 1 2 3. Xác suất hỏng của các bộ phậ trong thời gian làm việc theo thứ tự là 0,2 ; 0,4 và 0,3 a, tính xác suất có 2 bộ phận bị hỏng b, cuối ngày làm việc được biết rằng có 2 bộ phận bị hỏng. Tính xác suất để 2 bộ phận bị hỏng là bộ phận 1 và 2

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Một cỗ máy có 3 bộ phận 1 2 3. Xác suất hỏng của các bộ phậ trong thời gian làm việc theo thứ tự là...
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