Control charts for a process have previously been constructed. The X-Bar Chart upper and lower control limits

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Control charts for a process have previously been constructed. The X-Bar Chart upper and lower control limits are 92.5 and 88.5, respectively. New samples are taken from three machines with the following results:

Machine	Measurements
#1	93.4	92.2	91.9	92.7
#2	88.3	95.1	90.6	94.8
#3	92.5	93.1	88.9	90.3

Which machine(s), if any, appear(s) to have an out-of-control process mean based solely on the X-Bar Chart?

		Machine #1
		Machine #2
		Machine #3
		Machine #1 and Machine #3
		Machine #2 and Machine #3
		All of the machines
		None of the machines

Posted Date: May 18, 2024 08:01 AM

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Control charts for a process have previously been constructed. The X-Bar Chart upper and lower control limits

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