Mathematics, 23.07.2021 09:00 Becky323

Giả sử tỷ lệ bị bệnh X tại 1 thành phố là 9%. Khám ngẫu nhiên 81 người tại thành phố này, tính khả năng để có 27 người bị bệnh X.
Cần khám tối thiểu bao nhiêu người để khả năng gặp ít nhất 1 người bị bệnh X không ít hơn 9%?

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Giả sử tỷ lệ bị bệnh X tại 1 thành phố là 9%. Khám ngẫu nhiên 81 người tại thành phố này, tính khả...

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