Answered: he cadet is a popular model of sport…

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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The cadet is a popular model of sport utility vehicle, known for its relatively high resale value. The bivariate data given below were taken from a sample of sixteen cadets, each bought new two years ago, and each sold used within the past month . For each cadet in the sample, we have listed both the mileage x (in thousands of miles) that the cadet had on its odometer at the time it was sold used and the price y (in thousand dollars) at which the cadet was sold used. The least-squares regression line for these data has equation of y=41.79-0.50x. This line is shown in the scatter plot below. A) for these data, used selling prices that are greater than the mean of the used selling prices tend fo be paired with mileages that are ___ the mean of the mileages ? B) according to the regression equation, for an increase of one thousand miles in cadet mileage, there is a corresponding decrease of how many thousand dollars in the used selling price?

e least-squares regression line for these data has equation y = 41.79 – 0.50x. This line is shown in the scatter plot below.
Mileage, x
(in thousands)
Used selling price, y
(in thousands of dollars)
27.0
29.5
20.9
31.6
24.0
28.1
40+
34.5
25.9
29.5
27.4
35-
27.8
25.8
15.3
34.2
30-
25.9
26.7
23.3
33.3
20.6
30.8
20
39.2
21.2
27.8
30.3
30
31.9
Mileagex
(in thousands)
22.9
24.1
29.2
37.7
23.1
23.9
27.8
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Based on the sample data and the regression line, complete the following.
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Used selling price
(in thousands of dollars)

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