. , (a; b), f(x) a b:
.
. 1 |
.
a = M() (. . 1), s
.
. a , . , , . , , .
a = 0 s = 1 (). ٳ
.
φ(x) .
, . , X (a, b),
.
, , , () . , M()=a s, (a, b) :
() () = (t 2) (t 1) (1)
() . . 1.
.
1. () R.
2. () , ( ) = ().
3. (0) = 0.
4. () .
, δ. (1) (), :
. (2)
s, δ, s. :
;
;
.
, (P = 0,997) , , , 3s. . , . .2
|
|
2
1. X = 2, s = 4. , X 0 8.
. , t 1 t 2:
t 1 = (0 2)/4 = 1/2, t 2 = (8 2)/4 = 3/2.
. 1 (t 1) = 0.191, (t 2) = 0.433. P (0 < X < 8) = (t 2) (t 1) = 0.433+0.191=0.624.
2. 6,5 / 1,5 /. , 8,0 /.
. t 1 t 2:
t 1 =(86,5)/1,5= 1, t 2 =(¥6,5)/1,5= ¥
1 (t 1) = 0, 34134, (t 2) = 0.5. P (8,0 / < X < ¥) = (t 2) (t 1) = 0.5 0, 34134≈0,16.
, 16 , 8,0 /.
3. , a =100 , s2 = 1/900 2. , (100 0,05) .
(2), (100 δ; 100 + δ), δ = 0,05:
. 2 (1,5) = 0,4332. (| X a | < d) = 2 × 0,4332 = 0,8664.
, ᒺ ( ) . , ᒺ.
ᒺ .
ᒺ ᒺ ᒺ .
ᒺ ᒺ , (). , , ᒺ .
, , . , , . , ( ) , . , , , , σ. , , : , . :
(3)
ֳ , D , s2., , n/(n 1),
. (4)
s:
|
|
(5)
, ᒺ (, , ) . , n < 30.