For an X-Bar Chart Where the Standard Deviation Is Known $\sqrt { n }$

question 77

Multiple Choice

For an x-bar chart where the standard deviation is known, the Upper Control Limit

• A) is 3 . ? below the mean of sample means for a 3? control chart.
• B) is 3 . ? above the mean of sample means for a 3? control chart.
• C) is 3 . ?/ \(\sqrt { n }\) below the mean of sample means for a 3? control chart.
• D) is 3 . ?/ \(\sqrt { n }\) above the mean of sample means for a 3? control chart.
• E) Cannot be calculated unless the average range is known.

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