:
n , p A. Sn n . , Sn= X1+ X2+ + Xn, k k- , k = 1, 2, , n. k , .
. (1)
. :
. k1= , k2= , .
(1) :
, : , () , . , ,
.
26) , m σ2 m.
¯ x=1/n*Σxn m.
, n x, Mx = m, .
-:
- n x. Mx = m, .. , .
.
. , :
,
.. . .
, n x, Mx = m , .
-:
- n x. Mx = .
:
.
:
,
.. .
,
, n x.
,
,
, .
27) X1,Xn s2. -, - s2.
Zn = (x1xn) n, s2=n/(n-1) . : S2 s2.
M(S2)=M(n/(n-1) ) = n/(n-1) M() = n/(n-1) * (n-1)/n * s2 = s2, ..
M()= .