Answered: 45 - 30 10,000 20,000 30,000 40,000…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

All the efficiency money can buy 2011 A sample of 84
model-2011 cars from an online information service was
examined to see how fuel efficiency (as highway mpg)relates to the cost (Manufacturer’s Suggested Retail Price
in dollars) of cars. Here are displays and computer
output:a) State what you want to know, identify the variables,
and give the appropriate hypotheses.
b) Check the assumptions and conditions.
c) If the conditions are met, complete the analysis.

45 -
30
10,000
20,000
30,000
40,000
Manufacturer's Suggested Retail Price
Dependent variable is MPG
R-squared = 0.0216%
s = 3.54
Variable Coefficient
SE(Coeff)
t-Ratio
P-Value
Intercept
36.514
1.496
24.406
<0.0001
Slope
-8.089E -6 6.439E – 5
-0.1256
0.900
10
36.15 36.2 36.25 36.3 36.35 36.4
Predicted
Residuals
Efficiency (highway MPG)
5.

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