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Mathematics, 22.07.2021 08:00 lerasteidl

Trọng lượng sản phẩm do một máy sản xuất tự động là biến ngẫu nhiên X (tính theo gam) có phân phối chuẩn X ∼ N(450; 9). Sản phẩm được coi là đạt tiêu chuẩn nếu trọng lượng của nó sai lệch so với trọng lượng trung bình không quá 1 gam. Tính tỉ lệ sản phẩm đạt tiêu chuẩn. Biết Φ0(0, 11) = 0, 0438; Φ0(0, 33) = 0, 1293; Φ0(+∞) = 0, 5

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Trọng lượng sản phẩm do một máy sản xuất tự động là biến ngẫu nhiên X (tính theo gam) có phân phối c...
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