Trong một hộp có 60 cây vàng, 7 không đạt tiêu chuẩn, rút ngẫu nhiên 10 cây để kiểm tra. Tìm trung bình số cây không đạt tiêu chuẩn trong 10 cây này

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

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Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.