... (di-D)21 73 69 4 0,340 27 2 50 54 -4 55,00694 3 83 82 1 5,840 27 4 78 67 11 57, 50694 5 56 60 -4 55,00694 6 74 73 1 5,840 27 7 74 75 -1 19,50694 8 87 78 9 31, 173 61 9 69 64 5 2,50694 10 72 72 0 ... U0,995=2, 575 575 ,21000) 072 ,01( 072 ,01000) 075 ,01( 075 ,0) 072 ,0 075 ,0()( )( 575 ,21000) 072 ,01( 072 ,01000) 075 ,01( 075 ,0) 072 ,0 075 ,0(−+−+−≤−−≤−+−−−yxyxPPvàPP Suy ra -0,0 27& lt;px-py<0,033 ... 70 7 12,84028 12 75 63 12 73 , 673 61 Tổng 41 330,91 670 Trung bình D=3,41 67 Sd=5,4848 Như vậy D=3,41 67, Sd=5,4848, t(11;0,025)=2,201 Thay vào công thức ta có: 201,2124848,541 67, 3)(201,2124848,541 67, 3...