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Mathematics, 10.08.2021 16:20 asher456581
một mẫu ngẫu nhiên gồm 100 giấy báo điểm cho thấy điểm trung bình là 21,2 điểm. giả sử tổng thể có độ lệch chuẩn là 2,5. với mức ý nghĩa 0,04 hãy kiểm định khẳng định điểm trung bình là 21 điểm
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một mẫu ngẫu nhiên gồm 100 giấy báo điểm cho thấy điểm trung bình là 21,2 điểm. giả sử tổng thể có đ...
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