Теория вероятностей и математическая статистика. Фарафонов В.Г - 49 стр.

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


2
2
0
1
() ,
2
Φ
π
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=
ò
t
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x e dt



2
2
()
2
1
( ) ()
2
ββ
σ
ξ
αα
αξβ
σπ
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-
<<= = =
òò
xa
p f x dx e dx
2
2
1
.
2
β
σ
α
σ
βα
ΦΦ
σσ
π
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==-
÷÷
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e dz

     

() .
βα
αξβΦ Φ
σσ
æöæö
--
÷÷
çç
<<= -
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÷÷
çç
èøèø
aa
p


( )
( )2.σξ σΦ-×<<+×=pа t a t t

    
      
2 (3) 0,9973,Φ »
     
     
x

ξ

3σ±a
