Business, 25.06.2021 14:00, dominickstrickland
Có một lô thuốc mà người giao hàng báo cáo là tỷ lệ xấu bằng 5%.
a) Hỏi cần lấy ra tối thiểu bao nhiêu lọ để xác suất có ít nhất 1 lọ xấu là ≥ 0,9.
b) Lấy ra ngẫu nhiên 20 lọ để kiểm tra thấy có 3 lọ xấu. Hỏi báo cáo của người
giao hàng có đúng không trong mỗi trường hợp sau:
(i) Với mức ý nghĩa 5% (hay độ tin cậy 95%)?
(ii) Với mức ý nghĩa 3,662%?
Answers: 2
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Có một lô thuốc mà người giao hàng báo cáo là tỷ lệ xấu bằng 5%.
a) Hỏi cần lấy ra tối thiểu bao nh...
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