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Author Question: A quality analyst wants to construct a sample mean chart for controlling a packaging process. He ... (Read 57 times)

tuffie

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A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that the process standard deviation is two ounces. Each day last week, he randomly selected four packages and weighed each. The data from that activity appears below.



(a) Calculate all sample means and the mean of all sample means.
(b) Calculate upper and lower control limits that allow for natural variations.
(c) Is this process in control?


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Marked as best answer by tuffie on Dec 3, 2019

lolol

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tuffie

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Reply 2 on: Dec 3, 2019
Wow, this really help


bitingbit

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

 

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