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%?

What is the value of x? enter your answer in the box. photo attached.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83