Ngày tải lên :
17/11/2014, 11:11
... X~T(10) P (T > 2, 228 1) = T DIST ( 2. 228 1,10,1) = 0, 025 0 02 P (T ≤ 1 ,37 22 ) = − P (T > 1 ,37 22 ) = − T DIST (1 .37 22 ) = 0,9000 02 P (| T |> 2, 228 1) = T DIST ( 2. 228 1,10 ,2) = 0,0500 03 P (| T |> x ) ... npq npq K − 25 0 500 − K − 25 0 ) − Φ( ) ≥ 0,95 125 125 K − 25 0 K − 25 0 ⇔ 2 ( ) ≥ 0,95 ⇔ Φ( ) ≥ 0 ,47 5 125 125 K − 25 0 ⇔ ≥ 1,96 ⇔ K ≥ 25 0 + 1,96 125 = 27 1,9 135 125 KL : K ≥ 27 2 ⇔ Φ( 26 VD: X(mm) ... P(χ > 4, 865) = 0,90 P(χ ≤ 3, 24 7 ) = − P(χ > 3, 24 7 ) = − 0,975 = 0, 025 2 P( χ > χ 2 , 99 ) = 0,99 ⇒ χ , 99 = 2, 558 ( P(χ > x ) = 0,99 ⇒ x = 2, 558) 2 P(χ > χ , 025 ) = 0, 025 ⇒ χ , 025 = 20 ,4 83 ( P(χ...