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Mathematics, 27.08.2021 05:50 medellincolombia99

Trọng lượng sản phẩm A do một máy sản xuất tự động là biến ngẫu nhiên có phân phối chuẩn với trung bình 150g và độ lệch chuẩn 15g. Sản phẩm A được coi là đạt chuẩn nếu trọng
lượng của nó từ 145g đến 155g.
a. Tính tỷ lệ sản phẩm A đạt chuẩn do máy trên sản xuất.
b. Tính tỷ lệ phế phẩm của máy này.

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Trọng lượng sản phẩm A do một máy sản xuất tự động là biến ngẫu nhiên có phân phối chuẩn với trung...
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