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#1 Problem 11 [page 620] To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13-inch models. Brand & Model Price ($)Overall Score Samsung Ultrabook NP900X3C-A01US Apple MacBook Air MC965LL/A Apple MacBook Air MD231LL/A HP ENVY 13-2050nr Spectre XT Sony VAIO SVS13112FXB Acer Aspire S5-391-9880 Ultrabook 1250 83 1300 83 1200 82 950 79 800 77 1200 74 Apple MacBook Pro MD101LL/A Apple MacBook Pro MD313LL/A Dell Inspiron I13Z-6591SLV Samsung NP535U3C-A01US 1200 74 1000 73 700 67 600 63 a. Use the least squares method to develop the estimated regression equation (by Hand calculations). b. Another laptop that Consumer Reports tested is the Acer Aspire S3-951-6646 Ultrabook; the price for this laptop was $700. Predict the overall score for this laptop using the estimated regression equation developed in part (a).

#1 Problem 11 [page 620] To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13-inch models. Brand & Model Price ($)Overall Score Samsung Ultrabook NP900X3C-A01US Apple MacBook Air MC965LL/A Apple MacBook Air MD231LL/A HP ENVY 13-2050nr Spectre XT Sony VAIO SVS13112FXB Acer Aspire S5-391-9880 Ultrabook 1250 83 1300 83 1200 82 950 79 800 77 1200 74 Apple MacBook Pro MD101LL/A Apple MacBook Pro MD313LL/A Dell Inspiron I13Z-6591SLV Samsung NP535U3C-A01US 1200 74 1000 73 700 67 600 63 a. Use the least squares method to develop the estimated regression equation (by Hand calculations). b. Another laptop that Consumer Reports tested is the Acer Aspire S3-951-6646 Ultrabook; the price for this laptop was $700. Predict the overall score for this laptop using the estimated regression equation developed in part (a).

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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Chapter 14 #1 Problem 11 [page 620] To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13-inch models. Brand & Model Price ($)Overall Score Samsung Ultrabook NP900X3C-A01US Apple MacBook Air MC965LL/A Apple MacBook Air MD231LL/A HP ENVY 13-2050nr Spectre XT Sony VAIO SVS13112FXB Acer Aspire S5-391-9880 Ultrabook Apple MacBook Pro MD101LL/A Apple MacBook Pro MD313LL/A 1250 83 1300 83 1200 82 950 79 800 77 1200 74 1200 74 1000 73 Dell Inspiron I13Z-6591SLV Samsung NP535U3C-A01US 700 67 600 63 Use the least squares method to develop the estimated regression equation (by Hand calculations). a. b. Another laptop that Consumer Reports tested is the Acer Aspire S3-951-6646 Ultrabook; the price for this laptop was $700. Predict the overall score for this laptop using the estimated regression equation developed in part (a).
Transcribed Image Text:Chapter 14 #1 Problem 11 [page 620] To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13-inch models. Brand & Model Price ($)Overall Score Samsung Ultrabook NP900X3C-A01US Apple MacBook Air MC965LL/A Apple MacBook Air MD231LL/A HP ENVY 13-2050nr Spectre XT Sony VAIO SVS13112FXB Acer Aspire S5-391-9880 Ultrabook Apple MacBook Pro MD101LL/A Apple MacBook Pro MD313LL/A 1250 83 1300 83 1200 82 950 79 800 77 1200 74 1200 74 1000 73 Dell Inspiron I13Z-6591SLV Samsung NP535U3C-A01US 700 67 600 63 Use the least squares method to develop the estimated regression equation (by Hand calculations). a. b. Another laptop that Consumer Reports tested is the Acer Aspire S3-951-6646 Ultrabook; the price for this laptop was $700. Predict the overall score for this laptop using the estimated regression equation developed in part (a).
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