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Mathematics, 25.07.2021 14:00 serenitynycole
Khảo sát ngẫu nhiên 400 trái của một loại trái cây, người ta thấy có 180 trái loại I. Nếu cho rằng tỉ lệ trái loại I là 50% thì có chấp nhận được không, với mức ý nghĩa 5%? Yêu cầu tính giá trị kiểm định và đưa ra nhận xét.
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Khảo sát ngẫu nhiên 400 trái của một loại trái cây, người ta thấy có 180 trái loại I. Nếu
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