An article contained the following observations on degree paper specimens for wh

Question

An article contained the following observations on degree paper specimens for which viscosity times concentration fell in a certain middle range of polymerization for 417 420 422 422 425 426 430 435 436 438 445 447 448 452 458 461 464 (a) Construct a boxplot of the data. e 420 440 450 460 420 450 o 420 430 440 450 460 420 450 Comment on any interesting features. (Select all that apply.) There is one outlier. The data appears to be centered near 438 The data is strongly skewed. The data appears to be centered near 428. There is little or no skew. There are no outliers

Explanation / Answer

The statistical software output for this problem is:

One sample T confidence interval:
: Mean of variable

95% confidence interval results:

Hence,

95% two sided confidence interval will be:

(430.18, 445.82)

Variable Sample Mean Std. Err. DF L. Limit U. Limit var4 438 3.6872196 16 430.18344 445.81656

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