Please assist

An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 416 420 421 422 426 427 430 435 437 438 446 446 448 452 455 463 465 (a) Construct a boxplot of the data. O 420 430 440 450 460 O 420 430 440 450 460 O 420 430 440 450 O 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) I There is little or no skew. The data appears to be centered near 438. There is one outlier. There are no outliers. The data is strongly skewed. The data appears to be centered near 428. [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.) Does the interval suggest that 439 is a plausible value for true average degree of polymerization? Yes ONo Does the interval suggest that 452 is a plausible value? O Yes O No You may need to use the appropriate table in the Appendix of Tables to answer this