Mathematics, 17.06.2021 06:30 allytrujillo20oy0dib
Đo cholesterol (đơn vị mg%) cho một nhóm ngừoi, ta ghi nhận lại đượcChol.150-160160-170170-180180-1 90190-200200-210Số người3911321
Cho rằng độ cholesterol tuân theo phân phối chuẩn
.a. Tính trung bình mẫuxvà phương sai mẫus2
.b. Tìm khoảng ước lượng cho trung bình cholesterol trong dân số ở độ tin cậy 0,95.c. Có tài liệu cho biết lượng cholesterol trung bình là0= 175mg%. Giá trị này có phù hơp với mẫu quansát không? (kết luận vớiα= 0,05.)
Aa
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Đo cholesterol (đơn vị mg%) cho một nhóm ngừoi, ta ghi nhận lại đượcChol.150-160160-170170-180180-1...
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