Mathematics
Mathematics, 28.07.2021 07:00, DivineMemes420

TÍNH GIÁ TRỊ Zt DÙNG ĐỂ KIỂM ĐỊNH BÀI TOÁN SAU. Điều tra năng suất của vải thiều Thanh Hà trên 25 cây người ta tính được năng suất trung bình là 64,7 kg/cây và độ lệch mẫu s=2 (kg/cây). Giả sử năng suất vải là biến ngẫu nhiên có phân phối chuẩn. Với mức ý nghĩa 5%, có thể cho rằng năng suất trung bình của vải thiều Thanh Hà nói chung cao hơn 61kg/cây được hay không? (4 Điểm)

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TÍNH GIÁ TRỊ Zt DÙNG ĐỂ KIỂM ĐỊNH BÀI TOÁN SAU. Điều tra năng suất của vải thiều Thanh Hà trên 25 câ...

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