b. An experiment to investigate the effects of motor bearing brand on vibration records the following motor vibrations (in microns). Brand 1 11.6 13.2 14.4 15.3 13.6 14.7 Y1. = 82.8 Brand 2 16.3 17.2 15.9 16.3 17.0 17.1 Yz = 99,8 Brand 3 14.0 15.7 13.9 13.7 14.2 13.4 Y3. = 84.9 i) Construct an ANOVA table for the motor vibration readings given. ii) Show that the mean motor vibration is significantly different for at least one pair of brands of motor bearing. Use a 5% level of significance. iii) Conduct a least significant difference (LSD) comparison test, at a = 0.05, to determine which brand of motor bearing is different.
b. An experiment to investigate the effects of motor bearing brand on vibration records the following motor vibrations (in microns). Brand 1 11.6 13.2 14.4 15.3 13.6 14.7 Y1. = 82.8 Brand 2 16.3 17.2 15.9 16.3 17.0 17.1 Yz = 99,8 Brand 3 14.0 15.7 13.9 13.7 14.2 13.4 Y3. = 84.9 i) Construct an ANOVA table for the motor vibration readings given. ii) Show that the mean motor vibration is significantly different for at least one pair of brands of motor bearing. Use a 5% level of significance. iii) Conduct a least significant difference (LSD) comparison test, at a = 0.05, to determine which brand of motor bearing is different.
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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Transcribed Image Text:b. An experiment to investigate the effects of motor bearing brand on vibration records the following
motor vibrations (in microns).
Brand 1
11.6
13.2
14.4
15.3
13.6
14.7
Y1. = 82.8
Brand 2
16.3
17.2
15.9
16.3
17.0
17.1
Yz = 99.8
Brand 3
14.0
15.7
13.9
13.7
14.2
13.4
y3. = 84.9
i) Construct an ANOVA table for the motor vibration readings given.
ii) Show that the mean motor vibration is significantly different for at least one pair of brands of motor
bearing. Use a 5% level of significance.
iii) Conduct a least significant difference (LSD) comparison test, at a = 0.05, to determine which brand
of motor bearing is different.
iv) Would it be appropriate to conduct an LSD test if the test in (ii) failed to reject the null hypothesis?
Given a reason why or why not.
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