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Mathematics, 07.04.2020 19:06 martamsballet
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 range:(a) Construct a boxplot of the data and comment on any interesting features. (b) Is it plausible that the given sample observations came from a normal distribution? Explain and provide any associated graphs. (c) Calculate a two-sided 95% confidence interval for the true average degree of polymerization. (d) Does the interval suggest that 440 is a plausible value for the true average degree of polymerization? Explain. (e) Does the interval suggest that 450 is a plausible value for the true average degree of polymerization? Explain
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