1. SECTION 9.1
Given correlation
correlation sample size deg. Freedomα Standard Error Test Statistic CRITICAL SCORE
0.5080 16 14 0.03 0.23 2.21 LEFT -2.145
RIGHT 2.145
TWO -2.510
2.510
x-variable y-variable correlation sample sizedeg. Freedomα Standard Error Test Statistic
8 12.4 0.7533 22 20 0.05 0.15 5.12
4 5
5 6.5
3 13
1 1.69
14 17.56
1 3.75
5 7.77
1 81
13 18.87
6 24.7
6 39.45
7 43.02
1 5.4
3 8.94
2 1.73
2 2.68
5 11.43
19 128.56
1 0.99
7 43.68
8 22.48
1 14.99
41 171.06
5 49.45
7 9.9
8 9.66
4 4.02
5 15.12
1 1.38
2 9.99
16.5 57.83
6 10.9
8 29.85
7 27.38
5 6.5
5 7.35
2 5.48
7 41.78
2 31.84
19 41.95
2 4
11 27.57
3 5.05
5 3.3

2. 1 1.59
1 17
2 20.88
7 12.01
9 29.25
34 71.71
5 17.52
19 24.23
1 6.99
2 19.18

3. TICAL SCORE
CRITICAL SCORE
LEFT -1.725
RIGHT 1.725
TWO -2.086
2.086

5. x y Slope m Y-int b Regression Linex-value Predict y
0.1 14.9 -1.481 14.790 y=mx+b 18 -11.873
0.2 14.5 3.9 9.013
0.5 13.4 0.6 13.901
0.7 14.1 0.4 14.198
0.8 13.4
0.9 13.7
15.5
15
f(x) = -1.48x + 14.79
14.5
Column B
14 Linear re-
gression for
13.5 Column B
13
12.5
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

6. Coefficient of
x y Y-Average (y-y^)2 Predicted y x2 y2 xy Determination
15 26 56.500 5.721 28.39 225.0 676.0 390.0 0.940
20 32 Slope 11.689 35.42 400.0 1024.0 640.0
20 38 1.405 6.662 35.42 400.0 1444.0 760.0 Standard Error
30 56 Intercept 42.602 49.47 900.0 3136.0 1680.0 6.22
40 54 7.311 90.764 63.53 1600.0 2916.0 2160.0
45 78 Sample Size 55.442 70.55 2025.0 6084.0 3510.0
50 80 8 5.851 77.58 2500.0 6400.0 4000.0
Degree
60 88 Freedom 13.214 91.64 3600.0 7744.0 5280.0
6
Con. Level
0.9
Critical Score
1.943

7. X-value √
32
Prediction
52.284
Error
12.842
Left End
39.441
Right End
65.126

8. Data y x1 x2
84 120 18
88 130 17
81 118 25
92 144 8
79 125 19
78 116 20
90 135 10