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Earthgirl225 Earthgirl225
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A year ago
To perform diagnostics on the consistency of a laboratory scale, multiple measurements are taken using a reference weight over the course of several days. The variance observed over 20 repeated measures is 248. What is a 99% confidence interval for the measurement variance of this scale?


(122.129, 688.486)



(11.051, 26.239)



(117.809, 633.862)



(174.034, 413.213)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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hfrankoshfrankos
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A year ago
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Earthgirl225 Author
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A year ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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Yesterday
You make an excellent tutor!
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2 hours ago
this is exactly what I needed
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