(a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 420 430 440 450 460 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) There is one outlier. The data is strongly skewed. The data appears to be centered near 428. There are no outliers. The data appears to be centered near 438. There is little or no skew. (b) Is it plausible that the given sample observations were selected from a normal distribution? Yes No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) Does the interval suggest that 440 is a plausible value for true average degree of polymerization? Yes No Does the interval suggest that 456 is a plausible value? Yes No

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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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:
415 420 421 422 426 427 432 434 437
438 446 447 450 452 457 463 464
(a) Construct a boxplot of the data.
420
430
440
450
460
420
430
440
450
420
430
440
450
460
420
430
440
450
460
Comment on any interesting features. (Select all that apply.)
There is one outlier.
n The data is strongly skewed.
n The data appears to be centered near 428.
n There are no outliers.
n The data appears to be centered near 438.
n There is little or no skew.
(b) Is it plausible that the given sample observations were selected from a normal distribution?
Yes
o No
(c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)
Does the interval suggest that 440 is a plausible value for true average degree of polymerization?
o Yes
o No
Does the interval suggest that 456 is a plausible value?
Yes
o No
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: 415 420 421 422 426 427 432 434 437 438 446 447 450 452 457 463 464 (a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 420 430 440 450 460 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) There is one outlier. n The data is strongly skewed. n The data appears to be centered near 428. n There are no outliers. n The data appears to be centered near 438. n There is little or no skew. (b) Is it plausible that the given sample observations were selected from a normal distribution? Yes o No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) Does the interval suggest that 440 is a plausible value for true average degree of polymerization? o Yes o No Does the interval suggest that 456 is a plausible value? Yes o No
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