A scientist believes that, over the years, the number of major earthquakes has been decreasing. To test his hypothesis, the scientist collects data on the number of earthquakes above magnitude 7.0 on the Richter scale that have occurred each year from 1900 to 2012. Using the data below create a scatter plot with year on the horizontal axis. • HOME - INSERT > DATA fx Year A F H. Year Earthquakes above Magnitude 1900 13 3. 1901 14 4. 1902 8 1903 10 6. 1904 16 1905 26 1906 32 9. 1907 27 10 1908 18 11 1909 32 12 1910 36 13 1911 24 14 1912 22 15 1913 23

A scientist believes that, over the years, the number of major earthquakes has been decreasing. To test his hypothesis, the scientist collects data on the number of earthquakes above magnitude 7.0 on the Richter scale that have occurred each year from 1900 to 2012. Using the data below create a scatter plot with year on the horizontal axis. • HOME - INSERT > DATA fx Year A F H. Year Earthquakes above Magnitude 1900 13 3. 1901 14 4. 1902 8 1903 10 6. 1904 16 1905 26 1906 32 9. 1907 27 10 1908 18 11 1909 32 12 1910 36 13 1911 24 14 1912 22 15 1913 23

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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A scientist believes that, over the years, the number of major earthquakes has been decreasing. To test his hypothesis, the scientist collects data on the number of earthquakes above magnitude 7.0 on the Richter scale that have occurred each year from 1900 to 2012. Using the data below create a scatter plot with year on the horizontal axis. • HOME • INSERT DATA fx Year A B F H Year Earthquakes above Magnitude 1900 13 3. 1901 14 4 1902 8 5. 1903 10 1904 16 1905 26 1906 32 1907 27 10 1908 18 11 1909 32 12 1910 36 13 1911 24 14 1912 22 15 1913 23 16 1914 22 MAR 13 10 tv MacBook Air 80 000 DI DD F3 F4 F5 F6 F7 F8 F9 & %24
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Evan 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) 17 26 30 35 36 37 45 94 Hours (y) 6.7 5.9 5.8 4.5 6.8 6.1 3.8 2.1 10203040506070809010011012345678910-1Brightness LevelHours a) Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. b) Interpret the slope in context. Evan should expect -0.0604 hours per brightness level. Evan should expect -0.0604 brightness level per hour. c) What does the equation predict for the number of hours the phone will last at a brightness level of 36? hours