Question

An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 418 420 422 423 426 427 431 434 436 438 445 446 449 453 458 462 464 (a) Construct a boxplot of the data. WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot Correct: Your answer is correct. Comment on any interesting features. (Select all that apply.) The data appears to be centered near 428. There is little or no skew. The data is strongly skewed. The data appears to be centered near 438. There is one outlier. There are no outliers. Correct: Your answer is correct. (b) Is it plausible that the given sample observations were selected from a normal distribution? Yes No Correct: Your answer is correct. (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) 430.84 Incorrect: Your answer is incorrect. , 445.88 Incorrect: Your answer is incorrect. Does the interval suggest that 442 is a plausible value for true average degree of polymerization? Yes No Correct: Your answer is correct. Does the interval suggest that 449 is a plausible value? Yes No Correct: Your answer is correct.

Answer 1

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