1. X, , [ 1, 2],
2. , X, , a D> 0, :
(½ - ½£D) = 20 (t), t = D s.
(½ - ½£D), D:
D = s, (½ - ½£D) = 2(1)=0,6827;
D = 2 s, (½ - ½£D) = 2(2)=0,9545;
D = 3 s, (½ - ½£D) = 2(3)=0,9973.
.
() ,
:
:
(;) :
P (a<X<b) = -
:
M(X)= 1/λ
D(X)= 1/
σ(X) = 1/λ
-
R(T) = P(T>t) t:
R(T)= ,λ- . R(T)
.
(,)- , . , (i,j),
= P(X=xi,Y=yj)
. (X,Y) , , .
. (X,Y)
X1,x2 xn;y1,y2yn
. X
P(xi/yi) (i= 1,2n;j= 1,2n)
X Y=yi p(x1/yj), p(x2/yj),p(xi/yj), , Y=yi
,
X :
P(xi/yj)= P(xi/yj)/P(yj)
P(yj/xi)= P (xi/yj)/ P(xi)