The article Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers (IEEE Electrical Insul.

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The article “Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers” (IEEE Electrical Insul. Mag., 1996: 28–34) contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range:

418 421 421 422 425 427 431 434 437 439 446 447 448 453 454 463 465

a. Construct a boxplot of the data and comment on any interesting features.

b. Is it plausible that the given sample observations were selected from a normal distribution?

c. Calculate a two-sided 95% confidence interval for true average degree of polymerization (as did the authors of the article). Does the interval suggest that 440 is a plausible value for true average degree of polymerization?

What about 450?

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Probability And Statistics For Engineering And The Sciences

ISBN: 9781111802325

7th Edition

Authors: Dave Ellis, Jay L Devore

Question Posted: Sep 18, 2024 05:02 AM

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The article Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers (IEEE Electrical Insul.

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Probability And Statistics For Engineering And The Sciences

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