A manufacturer of cases for sound equipment requires drilling holes for metal screws. The drill bits wear out and must be replaced; there is expense not only in the cost of the bits but also for lost production. Engineers varied the rotation speed of the drill and measured the life- time y of four bits at each of five speeds. SpeedLifetime604.6603.8604.9604.5804.7805.8805.5805.410051004.51003.21004.81204.11204.512041203.81403.614031403.51403.4Create a scatterplot of the data. Does there appear to be a relation? Does it appear to be linear?Regardless fit a simple linear regression model to the data. What can you say about the fit of the model to the data?Is there any evident outlier . Remove this observation and fit the regression model again. Is it improving the model f

(1). Draw a scatterplot for the given data: Given data represents the values of rotation speed of…

Answered: A manufacturer of cases for sound…

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 manufacturer of cases for sound equipment requires drilling holes for metal screws. The drill bits wear out and must be replaced; there is expense not only in the cost of the bits but also for lost production. Engineers varied the rotation speed of the drill and measured the life- time y of four bits at each of five speeds.

Speed	Lifetime
60	4.6
60	3.8
60	4.9
60	4.5
80	4.7
80	5.8
80	5.5
80	5.4
100	5
100	4.5
100	3.2
100	4.8
120	4.1
120	4.5
120	4
120	3.8
140	3.6
140	3
140	3.5
140	3.4

1. Create a scatterplot of the data. Does there appear to be a relation? Does it appear to be linear?
2. Regardless fit a simple linear regression model to the data. What can you say about the fit of the model to the data?
3. Is there any evident outlier  . Remove this observation and fit the regression model again. Is it improving the model f

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