A Company produces brake liners of thickness 6.4 mm. The company has four different machines to produce break liners. Each day five samples of each machine are taken and thickness of the break liner is determined. The following tables lists these details:
The thickness of break lines (in mm)
Sample
Machine Identifier
A B C D
1 6.4001 6.3999 6.3903 6.4000
2 6.4011 6.3965 6.3803 6.4009
3 6.4035 6.3923 6.3703 6.3990
4 6.4101 6.3910 6.3995 6.3910
5 6.4071 6.3900 6.3918 6.4030 Perform an ANOVA using any software to test (at 5% level) whether all the four machines are producing the break lines with correct thickness. Justify your findings. Make suitable assumptions, if any.
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