Answered: Overall Brand & Model Price ($) Score…

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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Transcribed Image Text:Overall Brand & Model Price ($) Score Samsung Ultrabook NP900X3C-A01US 1,250 83 Apple MacBook Air MC965LL/A 1,300 83 Apple MacBook Air MD231LL/A. 1,200 82 HP ENVY 13-2050nr Spectre XT 950 79 Sony VAIO SVS13112FXB 800 77 Acer Aspire S5-391-9880 Ultrabook 1,200 74 Apple MacBook Pro MD101LL/A 1,200 74 Apple MacBook Pro MD313LL/A 1,000 73 Dell Inspiron I13Z-6591SLV 700 67 Samsung NP535U3C-A01US 600 63 (a) Develop a scatter diagram with price as the independent variable. 85 85 85 85 80 80 80 80 75 75 75 75 70 70 70 70 65 65 65 65 60 60 60 60 55 55- 55 55 600 800 1000 1200 1400 600 800 1000 1200 1400 600 800 1000 1200 1400 600 800 1000 1200 1400 Price ($) Price ($) Price ($) Price ($) (b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? O There appears to be a negative linear relationship between price ($) and overall score. O There appears to be no noticeable relationship between price ($) and overall score. O There appears to be a positive linear relationship between price ($) and overall score. (c) Use the least squares method to develop the estimated regression equation. (Round your numerical values to three decimal places). (d) Provide an interpretation of the slope of the estimated regression equation. O The slope gives the change in the price for every one point increase in the overall score. O The slope gives the change in the overall score for every one dollar increase in the price. O The slope gives the price when the overall score is 0. O The slope gives the change in the price for every one point decrease in the overall score. O The slope gives the overall score when the price is $0. (e) Suppose the price for another laptop that Consumer Reports tested was $950. Predict the overall score for this laptop using the estimated regression equation developed in part (c). (Round your answer to one decimal place.) Overall Score

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