The cost formula to estimate maintenance cost would be

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The results of the regression analysis to estimate maintenance costs using the number of machine hours are as follows:

SUMMARY OUTPUT

 

 

 

 

 

 

 

 

Regression Statistics

 

 

 

Multiple R

0.965203

 

 

 

R Square

0.931617

 

 

 

Adjusted R Square

0.914522

 

 

 

Standard Error

4361.72

 

 

 

Observations

6

 

 

 

 

 

 

 

 

ANOVA

 

 

 

 

 

df

SS

MS

F

Regression

1

1.04E+09

1.04E+09

54.49443

Residual

4

76098414

19024604

 

Total

5

1.11E+09

 

 

 

 

 

 

 

 

Coefficients

Std Error

t Stat

P-value

Intercept

8707.49

3961.828

2.197847

0.092875

X Variable 1

9.220886

1.249098

7.382034

0.001795

 

 

 

 

 


The cost formula to estimate maintenance cost would be

a.none of these 
b.$8707.49 + $9.22X
c.$8707.49 + ($9.22 × 0.93)
d.$8707.49 × 0.93
e.$8707.49 - $9.22X
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