Mathematics, 17.06.2021 21:10 genyjoannerubiera

Mỗi hộp cà phê hoà tan của một nhà máy quy định có trọng lượng là 50 gam. Lấy ngẫu nhiên 49 hộp của lô hàng mới xuất xưởng để kiểm tra số liệu như sau: xi=48, mi= 1. Xi= 48,5, mi= 1

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Mỗi hộp cà phê hoà tan của một nhà máy quy định có trọng lượng là 50 gam. Lấy ngẫu nhiên 49 hộp của...

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