Mathematics, 28.07.2021 16:40 joshua1255
Để ước lượng trong hồ có bao nhiêu cá , người ta bắt lên 1000 con , đánh dấu , rồi thả trở lại hồ . Một thời gian sau , bắt lên 100 con thì thấy có 80 con có dấu của lần bắt trước . Hãy ước lượng khoảng đối xứng cho số cá có trong hồ với mức ý nghĩa a = 5 % .
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Để ước lượng trong hồ có bao nhiêu cá , người ta bắt lên 1000 con , đánh dấu , rồi thả trở lại hồ ....
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