... 1 − α = 0, 99 =⇒ 1 −α2= 0, 99 5Phˆan vi.Student m´’uc 0 ,99 5 v´’oi 24 bˆa.c t’u.do l`a t1−α2= u0 ,99 5= 2, 797 Mi`ˆen b´ac b’o l`a Wα= (−∞;−2, 797 ) ∪ (2, 797 ;∞)x =1231,7525= ... 5 48,25 2 96 ,5 4656,12548, 5 − 49 48,75 5 243,75 11882,812 49 − 49, 5 49, 25 10 492 ,5 24255,625 49, 5 − 50 49, 75 6 298 ,5 14850,37550 − 50, 5 50,25 2 100,5 5050,12525 1231,75 60 695 ,062Ta ... cˆa.y 1 − α = 0, 95 =⇒ 1 −α2= 0, 97 5Phˆan vi.chu’ˆan u0 ,97 5= 1, 96 .Mi`ˆen b´ac b’o l`a Wα= (−∞;−1, 96 ) ∪ (1, 96 ; +∞).Gi´a tri.quan s´at u0=|x − m0|σ√n = 9, 5 − 82√5...