Mathematics, 25.10.2021 19:30 melaniaviles

độ dài của một chi tiết máy là biến ngẫu nhiên phân phối chuẩn với phương sai là 0,01 cm2. một chi tiết được coi là đạt chuẩn nếu độ dài sai lệch so với độ dài trung bình không quá 0,2 cm. Tỉ lệ đạt tiêu chuẩn do máy đó sản xuất là?

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độ dài của một chi tiết máy là biến ngẫu nhiên phân phối chuẩn với phương sai là 0,01 cm2. một chi t...

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