Question: A process engineer at Sival Electronics was trying to determine whether three suppliers would be equally capable of supplying the mounting boards for the new

A process engineer at Sival Electronics was trying to determine whether three suppliers would be equally capable of supplying the mounting boards for the new “gold plated” components that she was testing. The Ch05Data. xlsx file for Prob05-16 on the Student Companion Site shows the coded defect levels for the suppliers, according to the finishes that were tested. Lower defect levels are preferable to larger levels. Using one-way ANOVA, analyze these results. What conclusion can be reached, based on these data?


Sival Electronics

One-Way ANOVA

	Supplier 1	Supplier 2	Supplier 3
Finish 1	11.9	6.8	13.5
Finish 2	10.3	5.9	10.9
Finish 3	9.5	8.1	12.3
Finish 4	8.7	7.2	14.5
Finish 5	14.2	7.6	12.9

Anova: Single Factor

SUMMARY
Groups	Count	Sum	Average	Variance
Supplier 1	5	54.6	10.92	4.762
Supplier 2	5	35.6	7.12	0.697
Supplier 3	5	64.1	12.82	1.812


ANOVA
Source of Variation	SS	df	MS	F	P-value	F crit
Between Groups	84.233	2	42.117	17.377	0.00029	3.885
Within Groups	29.084	12	2.424

Total	113.317	14

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