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sinnefoula sinnefoula
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7 years ago
For a 3-sigma x-bar chart where the process standard deviation is known, the upper control limit:
A) is 3σ/sqrt(n) above the mean of sample means for a 3σ control chart.
B) is 3σ below the mean of sample means for a 3σ control chart.
C) is 3σ/sqrt(n) below the mean of sample means for a 3σ control chart.
D) is 3σ above the mean of sample means for a 3σ control chart.
E) cannot be calculated unless the average range is known.
Textbook 
Operations Management

Operations Management


Edition: 10th
Authors:
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HplyEvrAftrHplyEvrAftr
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sinnefoula Author
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#2
6 years ago
Perfect timing, ty
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