MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
We expect a car's highway gas mileage to be related to its
city gas mileage (in miles per gallon, mpg). Data for all
1259 vehicles in the government's 2019 Fuel Economy
Guide give the regression line
highway mpg = 8.720 + (0.914x city mpg)
for predicting highway mileage from city mileage.
1
O Macmillan Learning
(b) What is the intercept? Give your answer to three
decimal places.
intercept:
Why is the value of the intercept not
statistically meaningful?
The value of the intercept is an average value
calculated from a sample.
The value of the intercept represents the predicted
highway mileage for city gas mileage of 0 mpg,
and such a prediction would be invalid since 0 is
outside the range of the data.
The value of the intercept represents the predicted
highway mileage for slope 0.
O The value of the intercept represents the predicted
city mileage for highway gas mileage of 0 mpg,
and such a car does not exist.
mpg
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Transcribed Image Text:We expect a car's highway gas mileage to be related to its city gas mileage (in miles per gallon, mpg). Data for all 1259 vehicles in the government's 2019 Fuel Economy Guide give the regression line highway mpg = 8.720 + (0.914x city mpg) for predicting highway mileage from city mileage. 1 O Macmillan Learning (b) What is the intercept? Give your answer to three decimal places. intercept: Why is the value of the intercept not statistically meaningful? The value of the intercept is an average value calculated from a sample. The value of the intercept represents the predicted highway mileage for city gas mileage of 0 mpg, and such a prediction would be invalid since 0 is outside the range of the data. The value of the intercept represents the predicted highway mileage for slope 0. O The value of the intercept represents the predicted city mileage for highway gas mileage of 0 mpg, and such a car does not exist. mpg
Expert Solution
Check Mark
Step 1: Determine the given data in the question

Here the dependent variable is highway mpg.

The independent variable is city mpg.

Given that,

No. of vehicles left parenthesis n right parenthesis equals 1259

The regression line is,

h i g h w a y space m p g equals 8.720 plus 0.914 asterisk times c i t y space m p g

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