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A Process Has a Standard Deviation of 20; Values of 187

Question 58

Multiple Choice

A process has a standard deviation of 20; values of 187, 182, 164, 190; and a mean of180. Calculate the 95% confidence limits.


A) 142.3 < u < 192.6
B) 144.4 < u < 199.6
C) 158.2 < u < 198.6
D) 150.4 < u < 190.6

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