d) Hence test whether ? is significant. Give reasons for your answer. e) Perform the F Test making sure to state the null and alternative hypothesis. f) Given an interpretation of the term “R-sq” and comment on its value.
d) Hence test whether ? is significant. Give reasons for your answer. e) Perform the F Test making sure to state the null and alternative hypothesis. f) Given an interpretation of the term “R-sq” and comment on its value.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
Beachcomber Ltd in a local car dealership that sells used and new vehicles. The manager of the
company wants to know how different variables affect the sales of his vehicles. A random sample of
yearly data was taken with the view to testing the model:
SALES=?+?AGE+?MIL+?ENG
Where SALES= amount that a vehicle is sold for($000’s), AGE = age of the vehicle, MIL= the total
mileage of the vehicle at the point of sale and ENG = the size of the engine. The sample of data was
processed using MINITAB and the following is an extract of the output obtained:
- d) Hence test whether ? is significant. Give reasons for your answer.
- e) Perform the F Test making sure to state the null and alternative hypothesis.
- f) Given an interpretation of the term “R-sq” and comment on its value.
![The regression equation is *****
Predictor
Coef
StDev
t-ratio
p-value
Constant
1.7586
0.2525
6.9648
0.0000
AGE
0.2124
0.3175
0.5042
MIL
-0.7527
0.3586
-2.0991
**
ENG
4.8124
0.6196
7.7664
0.0000
Analysis of Variance
Source
DF
s
MS
Regression
3
413.1291
138.7097
0.00
***
Error
50
457.7607
2.2888
Total
53](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6dfe426a-7bd5-490a-a160-0f822a24e7b0%2F180ba965-12f6-4434-a5eb-de1adfbd7a6a%2Fuasin4_processed.png&w=3840&q=75)
Transcribed Image Text:The regression equation is *****
Predictor
Coef
StDev
t-ratio
p-value
Constant
1.7586
0.2525
6.9648
0.0000
AGE
0.2124
0.3175
0.5042
MIL
-0.7527
0.3586
-2.0991
**
ENG
4.8124
0.6196
7.7664
0.0000
Analysis of Variance
Source
DF
s
MS
Regression
3
413.1291
138.7097
0.00
***
Error
50
457.7607
2.2888
Total
53
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