Question 671768
Fifteen (15) widgets are randomly taken from an assembly line and measured for quality control. The widgets have an average weight of 38.5 grams with a standard deviation of 3.5 grams. What is the margin of error of the widgets on the assembly line?

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Note: Standard error is the word used to describe the standard deviation.
Margin of error should have some level of confidence associated with it.
Your problem statement does not.
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ME = z*s where z relates to a level of confidence.
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Cheers,
Stan H.