MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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2. An experiment was conducted to determine the effect of four different types of
tips in a hardness tester on the observed hardness of a metal alloy. Four
specimens of the alloy were obtained, and each tip was tested once on each
specimen, producing the following data:
Specimen
Туре of
Tip
1
2
3
4
1
9.3
9.4
9.6
10.0
9.4
9.3
9.8
9.9
3
9.2
9.4
9.5
9.7
4
9.7
9.6
10.0
10.2
Is there any difference in hardness measurements between the tips?
b. b. Use Fisher's LSD method to investigate specific differences between the tips.
c. Analyze the residuals from this experiment.
а.
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Transcribed Image Text:2. An experiment was conducted to determine the effect of four different types of tips in a hardness tester on the observed hardness of a metal alloy. Four specimens of the alloy were obtained, and each tip was tested once on each specimen, producing the following data: Specimen Туре of Tip 1 2 3 4 1 9.3 9.4 9.6 10.0 9.4 9.3 9.8 9.9 3 9.2 9.4 9.5 9.7 4 9.7 9.6 10.0 10.2 Is there any difference in hardness measurements between the tips? b. b. Use Fisher's LSD method to investigate specific differences between the tips. c. Analyze the residuals from this experiment. а.
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