1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...
1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ... 1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...
1225× ! 3!(4⎛5⎞5!× ⎜ ⎟⎝ 2 ⎠(3 23× 35× ( 10!)2!3!5!10!23× 35×3!× 5!(2(4x2y3z5× ! 2!(25 ⎛5⎞4!× ⎜ ⎟⎝ 2 ⎠( x + 2 y + 3z)(110 (810!23× 35×5!23× 35× (10!) 2 . 4 5 (959 . (439(34 5 3 4 (10 . . 3477(44277(3 X . () (11f (x)29x⎛ 1 ⎞= K⎜⎟⎝ 2 ⎠1K =4(4(418x = 012 , , , 3,... ( F(x) )X 1K =2(3 692477(2(2P(X≥ 1016(2492877(1(3(1(1) K (12(33K =2(214K = 2λe− λxx > 00 x ≤ 0x f (x) = (13(1(11− λe− λx(41+ λe− λx(31− e −λx(21+ e −λx(1
123 13 (141Lnλ2(42Lnλ(31 Ln2λ(2λLn2(1 E(X) f (x)=x20 < x < 2 X (150 452(4252(3522(2542(1 P( X1< )312 f (x) = (160−1 < x
- Page 29 and 30: 71Var(y) = a2Var(x) = ( −2)2× 1/
- Page 31 and 32: 73xy012f (y) ( (11 2 3 6 x-18 8
- Page 33 and 34: 75 a . 3 (8:
- Page 35 and 36: 77 ⎛4⎞⎛66⎞⎛4⎞⎛66⎞
- Page 37 and 38: 797(49 ( E(X) = λ)100−1−e λ(4
- Page 39 and 40: 81 . . 3 (1λ x = δ
- Page 41 and 42: 83E(x) = np = 43 / 2Var(x) = npq =
- Page 43 and 44: 85e−λλxP(x) =X!P(X ≥ 2)= 1−
- Page 45 and 46: 87f (x) =1µ = δ =λ . .
- Page 47 and 48: 89 P( − a < z < a)0/921=2(4 6
- Page 49 and 50: 9122− (4(399 1818(40/6587 (
- Page 51 and 52: 93 1 3P ( −a< z < a) = 2 φ a
- Page 53 and 54: 95P − PP(P < 0/6)= P(Z < ) = P(Z
- Page 55 and 56: 97 X . δ = 2 µ =10 (1 (1
- Page 57 and 58: 99. (4 n1 + n2−2 (3 X
- Page 59 and 60: 101: P(X< 300): (4 E(Z4 )1(
- Page 61 and 62: 103 . 2 (7. 3 (8. 2 (9. 4 (
- Page 63 and 64: 105 f (x) =1b − a0a < x
- Page 65 and 66: 107 (4 (3 (2H 1 :
- Page 67 and 68: 1090/31250 (40/343 (3 . 100 0/
- Page 69 and 70: 111 . H 0 H 0 . 3 (1
- Page 71 and 72: 113 3 2 (4 Y = 3 +0/4X0〈r≤
- Page 73 and 74: 115 (4( r = 100r′)X(3 Y,Y( B = B
- Page 75 and 76: 117 . X y . r=1 .
- Page 77 and 78: 11921212102121012121212121212121012
- Page 79: 121 82-8383 60: ( ) 20:
- Page 83 and 84: 125 . 4 (10 37374
- Page 85 and 86: 127 84-85 60: ( ) 20: .
- Page 87 and 88: 1291f (x) =θ (44X، 0< x < θ(4
- Page 89 and 90: 131Cov(x, y)= E(xy) − E(x)E(y) =
- Page 91 and 92: 133 711E(X / Y = 1)1520(4(4 f (x,
- Page 93 and 94: 135 . 225 µ X (18%95
- Page 95 and 96: 137 . 380 34-1 (40/75 (4n 2 n
- Page 97 and 98: 139f (x / y) =fx (x) =fy (y) =3 x23
- Page 99 and 100: 141x-2-10210y413-1-25 . 2 (23.
1225× ! 3!(4⎛5⎞5!× ⎜ ⎟⎝ 2 ⎠(3 23× 35× ( 10!)2!3!5!10!23× 35×3!× 5!(2(4x2y3z5× ! 2!(25 ⎛5⎞4!× ⎜ ⎟⎝ 2 ⎠( x + 2 y + 3z)(110 (810!23× 35×5!23× 35× (10!) 2 . 4 5 (959 . (439(34 5 3 4 (10 . . 3477(44277(3 X . () (11f (x)29x⎛ 1 ⎞= K⎜⎟⎝ 2 ⎠1K =4(4(418x = 012 , , , 3,... ( F(x) )X 1K =2(3 692477(2(2P(X≥ 1016(2492877(1(3(1(1) K (12(33K =2(214K = 2λe− λxx > 00 x ≤ 0x f (x) = (13(1(11− λe− λx(41+ λe− λx(31− e −λx(21+ e −λx(1
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