Mathematics, 01.12.2021 09:20 eldeldenali965
Một báo cáo của thư viện cho rằng mỗi ngày có khoảng 25 sinh viên tới mượn sách. Tiến hành điều tra 49 sinh viên về nhu cầu này thù trung bình có 26,5 người muốn mượn với độ lệch tính được là 2,5. Với mức ý nghĩa 5%, hãy cho biết ý kiến về báo cáo của thư viện
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Một báo cáo của thư viện cho rằng mỗi ngày có khoảng 25 sinh viên tới mượn sách. Tiến hành điều tra...
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