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Suppose a magazine would like to investigate the relationship between the battery life, in hours, and the screen size, in diagonal inches, of a laptop computer. The accompanying table shows a random sample of eight laptops and the battery life and corresponding scree each. Use this information to complete parts a through e below. E Click the icon to view the table showing battery life and screen size for 8 laptops. a) Construct a scatter plot for these data. Choose the correct graph below. OA. OB. Oc. OD. 20- 5- 20- 24 10 Screen Size 10- 24 10 Screen Size 10- Battery Life Battery Life b) Calculate the slope and y-intercept for the regression equation. The slope is b= (Round to four decimal places as needed.) Table of Battery Life and Screen Size The y-intercept is a=. (Round to four decimal places as needed.) c) Provide an interpretation for the value of the slope. Battery Life Screen Size 3.4 16.1 V . it can be concluded that a one V increase in | by an average of Because the slope is will the 3.9 17.6 (Round to four decimal places as needed.) 3.9 14.3 3.9 11.9 d) Calculate the coefficent of determination. 3.2 14.2 R =O (Round to three decimal places as needed.) 4.1 13.3 4.7 11.3 e) Interpret the value of R-squared. About % (Enter an integer with O decimal places) of the 3.9 12.6

Suppose a magazine would like to investigate the relationship between the battery life, in hours, and the screen size, in diagonal inches, of a laptop computer. The accompanying table shows a random sample of eight laptops and the battery life and corresponding scree each. Use this information to complete parts a through e below. E Click the icon to view the table showing battery life and screen size for 8 laptops. a) Construct a scatter plot for these data. Choose the correct graph below. OA. OB. Oc. OD. 20- 5- 20- 24 10 Screen Size 10- 24 10 Screen Size 10- Battery Life Battery Life b) Calculate the slope and y-intercept for the regression equation. The slope is b= (Round to four decimal places as needed.) Table of Battery Life and Screen Size The y-intercept is a=. (Round to four decimal places as needed.) c) Provide an interpretation for the value of the slope. Battery Life Screen Size 3.4 16.1 V . it can be concluded that a one V increase in | by an average of Because the slope is will the 3.9 17.6 (Round to four decimal places as needed.) 3.9 14.3 3.9 11.9 d) Calculate the coefficent of determination. 3.2 14.2 R =O (Round to three decimal places as needed.) 4.1 13.3 4.7 11.3 e) Interpret the value of R-squared. About % (Enter an integer with O decimal places) of the 3.9 12.6

MATLAB: An Introduction with Applications
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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Suppose a magazine would like to investigate the relationship between the battery life, in hours, and the screen size, in diagonal inches, of a laptop computer. The accompanying table shows a random sample of eight laptops and the battery life and corresponding screen s each. Use this information to complete parts a through e below. Click the icon to view the table showing battery life and screen size for 8 laptops. ..... a) Construct a scatter plot for these data. Choose the correct graph below. A. В. C. OD. 20- 5- 20- 2- 10 10+ 2- 10 10+ 2 20 20 Screen Size Battery Life Screen Size Battery Life b) Calculate the slope and y-intercept for the regression equation. The slope is b=|: (Round to four decimal places as needed.) Table of Battery Life and Screen Size The y-intercept is a =. (Round to four decimal places as needed.) c) Provide an interpretation for the value of the slope. Battery Life Screen Size 3.4 16.1 Because the slope is it be concluded that a one increase in will the by an average of 3.9 17.6 (Round to four decimal places as needed.) 3.9 14.3 d) Calculate the coefficent of determination. 3.9 11.9 3.2 14.2 R = (Round to three decimal places as needed.) 4.1 13.3 %3D 4.7 11.3 e) Interpret the value of R-squared. 3.9 12.6 About % (Enter an integer with 0 decimal places) of the Battery Life 이 Screen Size o o00 Battery Life Screen Size
Transcribed Image Text:Suppose a magazine would like to investigate the relationship between the battery life, in hours, and the screen size, in diagonal inches, of a laptop computer. The accompanying table shows a random sample of eight laptops and the battery life and corresponding screen s each. Use this information to complete parts a through e below. Click the icon to view the table showing battery life and screen size for 8 laptops. ..... a) Construct a scatter plot for these data. Choose the correct graph below. A. В. C. OD. 20- 5- 20- 2- 10 10+ 2- 10 10+ 2 20 20 Screen Size Battery Life Screen Size Battery Life b) Calculate the slope and y-intercept for the regression equation. The slope is b=|: (Round to four decimal places as needed.) Table of Battery Life and Screen Size The y-intercept is a =. (Round to four decimal places as needed.) c) Provide an interpretation for the value of the slope. Battery Life Screen Size 3.4 16.1 Because the slope is it be concluded that a one increase in will the by an average of 3.9 17.6 (Round to four decimal places as needed.) 3.9 14.3 d) Calculate the coefficent of determination. 3.9 11.9 3.2 14.2 R = (Round to three decimal places as needed.) 4.1 13.3 %3D 4.7 11.3 e) Interpret the value of R-squared. 3.9 12.6 About % (Enter an integer with 0 decimal places) of the Battery Life 이 Screen Size o o00 Battery Life Screen Size
e) Interpret the value of R-squared. About % (Enter an integer with 0 decimal places) of the A. change B. variance C. variation D. inches E. hours of A. screen size B. battery life is explained by the relationship with A. battery life B. screen size that is modelled by the regression equation.
Transcribed Image Text:e) Interpret the value of R-squared. About % (Enter an integer with 0 decimal places) of the A. change B. variance C. variation D. inches E. hours of A. screen size B. battery life is explained by the relationship with A. battery life B. screen size that is modelled by the regression equation.
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