(c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)

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An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range:
415 420 422 423 425 426 431 435 436
439 446 447 450 452 458 462 464
(a) Construct a boxplot of the data.
420
430
440
450
460
420
430
440
450
460
420
430
440
450
420
430
440
450
460
Comment on any interesting features. (Select all that apply.)
V There are no outliers.
V The data appears to be centered near 438.
O The data is strongly skewed.
O The data appears to be centered near 428.
M There is little or no skew.
O There is one outlier.
(b) Is it plausible that the given sample observations were selected from a normal distribution?
O Yes
O No
(c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)
Transcribed Image Text:An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 420 422 423 425 426 431 435 436 439 446 447 450 452 458 462 464 (a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 460 420 430 440 450 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) V There are no outliers. V The data appears to be centered near 438. O The data is strongly skewed. O The data appears to be centered near 428. M There is little or no skew. O There is one outlier. (b) Is it plausible that the given sample observations were selected from a normal distribution? O Yes O No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)
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