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Jorge is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0- 100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) 9 8 7 Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the file, you may want to save it as an Excel Workbook. 9. 6 5 Hours WA 2 1 -1 ŷ= 10 = 33 34 49 60 3.6 5.7 4.1 3.6 20 30 40 50 60 Brightness Level 70 66 67 70 97 2.6 4.6 4.2 2.4 a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equ on. .0314 80 90 100 110 ✓X

Jorge is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0- 100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) 9 8 7 Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the file, you may want to save it as an Excel Workbook. 9. 6 5 Hours WA 2 1 -1 ŷ= 10 = 33 34 49 60 3.6 5.7 4.1 3.6 20 30 40 50 60 Brightness Level 70 66 67 70 97 2.6 4.6 4.2 2.4 a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equ on. .0314 80 90 100 110 ✓X

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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Jorge is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0- 100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) sunoH Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the file, you may want to save it as an Excel Workbook. 9+ 8 7 6 5 3 2 1 ४ 33 34 49 60 66 67 70 97 3.6 5.7 4.1 3.6 2.6 4.6 4.2 2.4 10 20 30 OF 40 50 60 Brightness Level 70 a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equation. ŷ = .0314 80 90 100 110 ✓X
Transcribed Image Text:Jorge is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0- 100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) sunoH Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the file, you may want to save it as an Excel Workbook. 9+ 8 7 6 5 3 2 1 ४ 33 34 49 60 66 67 70 97 3.6 5.7 4.1 3.6 2.6 4.6 4.2 2.4 10 20 30 OF 40 50 60 Brightness Level 70 a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equation. ŷ = .0314 80 90 100 110 ✓X
a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equation. ✓ ŷ = .0314 OF OT b. Interpret the slope in context. Jorge should expect hours go down by 0.0314 per each additional brightness level. brightness level goes down by 0.0314 per additional hour. Obrightness level goes up by 0.0314 per additional hour. hours go up by 0.0314 per each additional brightness level. ✓x X c. What does the equation predict for the number of hours the phone will last at a brightness level of 34? Round properly to 1 decimal place. hours d. What is the residual if the phone battery lasts 5.7 hours when the brighness level is 34? Round properly to 1 decimal place. hours
Transcribed Image Text:a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equation. ✓ ŷ = .0314 OF OT b. Interpret the slope in context. Jorge should expect hours go down by 0.0314 per each additional brightness level. brightness level goes down by 0.0314 per additional hour. Obrightness level goes up by 0.0314 per additional hour. hours go up by 0.0314 per each additional brightness level. ✓x X c. What does the equation predict for the number of hours the phone will last at a brightness level of 34? Round properly to 1 decimal place. hours d. What is the residual if the phone battery lasts 5.7 hours when the brighness level is 34? Round properly to 1 decimal place. hours
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