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Author Question: For an x-bar chart where the standard deviation is known, the Upper Control Limit (Read 83 times)

piesebel

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Question 1

The Central Limit Theorem
◦ controls the steepness of an operating characteristic curve.
◦ is the theoretical foundation of the c-chart.
◦ allows managers to use the normal distribution as the basis for building some control charts.
◦ states that the average range can be used as a proxy for the standard deviation.
◦ states that the average of assignable variations is zero.

Question 2

For an x-bar chart where the standard deviation is known, the Upper Control Limit
◦ is 3 . σ below the mean of sample means for a 3σ control chart.
◦ is 3 . σ above the mean of sample means for a 3σ control chart.
◦ is 3 . σ/ above the mean of sample means for a 3σ control chart.
◦ is 3 . σ/ below the mean of sample means for a 3σ control chart.
◦ Cannot be calculated unless the average range is known.


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Marked as best answer by piesebel on Dec 3, 2019

adf223

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piesebel

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Reply 2 on: Dec 3, 2019
Thanks for the timely response, appreciate it


Sarahjh

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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