Test the significance of regression coefficient b at 1% level of significance
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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#1 letter D with complete solution and table
Transcribed Image Text:1. The table below shows the data from the computer sales since 1960 to 1969.
(a) Obtain a scatter diagram of the data.
COST(X) SALES(Y)
YEAR
(h) Construct a line that approximates the data.
(c) Find the equation of the line constructed in part (h).
fA Estimate the-weight of u student-whose heightis known to be 63 in.
te Estimate the height of a student whase weight-is known-to be 168 15.
Test the significance of regression coefficient b at 1% level of significance
1960
15
38
1961
30
53
1962
16
бо
1963
39
72
1964
20
40
1965
36
47
1966
45
82
1967
10
21
1968
13
25
1969
16
40
2 Fit an equation of the forms Z = an + ajX + azY
To the given data
( yrs
No. Experience Test Score Salary
No Experience Test Score Salary
11
1
4
78
24
88
38
2
7
100
43
12
73
26.6
3
1
86
23.7
13
10
75
36.2
4
82
34.3
14
81
31.6
8
86
35.8
15
74
29
10
84
38
16
8
87
34
7
75
22.2
17
4
79
30.1
8
1
80
23.1
18
94
33.9
9.
6.
83
30
19
70
28.2
10
91
33
20
89
30
O 3 3
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