Before you attempt this question, on your graphing calculator hit MODE and turn STATDIAGNOSTICS on! (Orhit 2nd-0 and find Diagnosticon in the catalog.)Juwan is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scaleof 0-100). His data is displayed in the table and graph below.How'sBrightness Level (x)Hours (y)20765A5N137 37 39 42 61 64 66 764.3 4.5 4.2 5.6 3.3 4.2 2.7 3.610 20 30 40 50 60 70 80 90 100 11Brightness Levela) Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation.(You should begin by typing y=)b) Interpret the slope in context.●Juwan should expect -0.0366 brightness level per hour.Juwan should expect -0.0366 hours per brightness level.c) What does the equation predict for the number of hours the phone will last at a brightness level of 42?hoursd) Calculate the correlation coefficient r.

The data is defined below as follows: Let X represents the independent variable as the Brightness…

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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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