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Author Question: A woodworker is concerned about the quality of the finished appearance of her work. In sampling ... (Read 61 times)

EAugust

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Question 1

Repeated sampling of a certain process shows the average of all sample ranges to be 1.0 cm. The sample size has been constant at n = 5. What are the 3-sigma control limits for this R-chart?

Question 2

A woodworker is concerned about the quality of the finished appearance of her work. In sampling units of a split-willow hand-woven basket, she has found the following number of finish defects in ten units sampled: 4, 0, 3, 1, 2, 0, 1, 2, 0, 2.
a. Calculate the average number of defects per basket
b. If 3-sigma control limits are used, calculate the lower control limit, centerline, and upper control limit.


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Marked as best answer by EAugust on Dec 3, 2019

Liddy

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EAugust

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


jackie

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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