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66 . X (1 75(46416 Cov(x,XP(X)XP(x)-0/5 (4P(X= 20140/5 (3) . (338(21 (412516(1(3X (2 (2y) = −10, Var(y) = 25 , Var(x) -0/025 (263(164= 16 (3y x 0/025 (1X (41314(2(4 5000 . (515912 . 2000 0/00323 (4 -1142X01412/5 (3 (2X3131386<strong>162</strong>18 (4: 0/001 11 (2E(1(310 (1[(X− µ)(X − µ) ] (6 (1 (3
67X = xP (X =x) (435 (4 E (X − E(X))2= E(X) (7 (3 (2: : 34 (3 (1X (8y = 2x−1 17 (233 (1: Y = −2 x +1 E(X2 ) = 8 E (X) =10 (4 3/50 (3 7 (21/75 ( 12/ 5 (9: X X . 3 (10XP (X =: y =100/2x)XP (X =1 /75(49(42x + 5 − 3 2 −8150/3013x)(4200/41a018250/1 121− 2a382381/5 (3349(3 (23 (116 X (11E(2 x + 1 a .1412(2(41613(1(3) (12288328(2(4 δ 2 x 129 − 2 2δ2316(33181/25 (210(1830(38 (130/75 (1δ 2 x 8δ2− 4(222δ(14x 2 (-11) x (15. (1
Page 1 and 2: 43 (4 (3 (1 (2 (1
Page 3 and 4: 45 20 100 (16( ) 150 -
Page 5 and 6: 47 (2 (4 14 . . (2.
Page 7 and 8: 49 . 2 (1α i= 360×
Page 9 and 10: 51 n 100= = 502 2n− Fi −1m =2
Page 11 and 12: 53fi= ( < < ) . (2( < < ) .
Page 13 and 14: 55P(AU B)2 1P(B) = , P(A) =3 372(4(
Page 15 and 16: 576! (44× ! 3!(3 . 3 ! × 2!
Page 17 and 18: 59 4 3 . 21 (1
Page 19 and 20: 611 81−= ⇒ k = 3 ⇒ µ − kδ
Page 21 and 22: 63 P ( ) = P( )3 4 3 6 1P ( )
Page 23: 65 4 1 33P(W 1 ) =7 3 2 4P(B1
Page 27 and 28: 69 1000 δx= 2µx 770
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 and 80:
121 82-8383 60: ( ) 20:
Page 81 and 82:
123 13 (141Lnλ2(42Lnλ(31
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.
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1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...

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