Question: Angela is evaluating a new salt process delivery system and wants to know if the upper and lower control limits at 3 standard deviations for

Angela is evaluating a new salt process delivery system and wants to know if the upper and lower control limits at 3 standard deviations for the new system will meet the upper and lower controls specifications currently used (2.22 and 1.98). The population standard deviation is s = .07 and each sample is n=4. Are the numbers in bold correct, What are the new set limits

							Current Set Limits
	x1	x2	x3	x4	X		UCL	LCL
Sample 1	1.98	2.11	2.15	2.06	2.075	2.08	2.22	1.98
Sample 2	1.99	2.00	2.08	1.99	2.015	2.02
Sample 3	2.20	2.10	2.20	2.05	2.1375	2.14	New Process Limits
Sample 4	2.18	2.01	2.23	1.98	2.1	2.10	UCL	LCL
Sample 5	2.01	2.08	2.14	2.16	2.0975	2.10
					2.085	2.09

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