bachdien

x 0-5 5-10 10-15 15-20 20-25
y
100 5
120 12 11 15
140 1 13 17 9 6
160 7
cac san pham co chi tieu X<=5%,y<140 kg la loai II.Muon uoc luong ty le san pham loai II voi do tin cay 90% va do tin cay 3% thi can dieu tra them bao san pham nua[FONT=Times][SIZE=7][COLOR=green][COLOR=blue]