1. (3) 1 2. () 0,43 1; , , 0,44 2, . , 1, . ( ). , 0,60 , 0,65 .
, , ( 1 2) , : , (1), , (2).
0,79 (1), (2). . . - ,; , , . , , .
, . n1 = n2 = 25.
2. , . , . .
3. : 1, 2. - .
. (0,79). : n/1 = 24; n/2 = 24. . : n/1 = n/2.
4. . inverse . , () .
12 2. 1; , . 12 , , , 2, 1.
21 1. 2. , , -, , 1, 2.
|
|
5. 11 .
.
, , .
, 21 : (0,44) . 21×1 = 21 .
. , , (0,44) . 1 + 3 = 4; : 2×4 = 8.
, , .
21 1
å U21 = 21+8 = 29
6. 12 2 ( 11) .
3 : 1 + 21 = 22 . : 3×22 = 66.
, 20 ( 21) 1 + 21 + 2 == 24 . : 20×24 = 480
12 :
å U12 = 1 + 66 + 480 = 547.
7. U- : 1 2, 2 .
12. Z
a | 0.10 | 0.05 | 0.01 |
Z | 1.645 | 1.960 | 2.570 |
1 ( 2). (*)
:
1 ;
2 40 .
25 .
.
, , = 95% , . , . (**)
.
.
, ., .
2.
( )
. (*)
: , , .
|
|
.. ( )
:
[ / ] -
[ / ] -
1. .
i | xi | yi | xi yi | i2 | yi2 |
1 | 2 | 3 | 4 | 5 | 6 |
1 2 3 4 5 6 7 8 9 10 | 3.5 26.7 8.2 8.2 24.45 40.8 16.25 24.5 8.2 40.8 | 12.3 21.6 13.2 8.15 17.15 13.2 8.15 20.0 6.6 17.2 | 44.28 576.72 108.24 66.83 419.32 538.56 132.44 490.0 54.12 701.76 | 12.96 712.89 67.24 67.24 597.80 1664.64 264.06 600.25 67.24 1664.64 | 151.29 466.56 174.24 66.42 306.25 174.24 66.42 400.00 43.56 295.84 |
å | 201.7 | 137.55 | 3132.56 | 5718.96 | 2144.82 |
1 (xi, yi) . y = f(x)
[/] | 22
20
18
16
14
12
10
8
6
4
2 | |||||||||||
(3) | ||||||||||||
(7) | ||||||||||||
0 4 8 12 16 20 24 28 32 36 40 44
[/]
. 1 (**)