Refer to Exercise 33 in Section 7.3. The cited article also gave the following observations on degree

Question:

Refer to Exercise 33 in Section 7.3. The cited article also gave the following observations on degree of polymerization for specimens having viscosity times concentration in a higher range:

Exercise 33 in Section 7.3
The article "Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers" (IEEE Electrical Insul. Mag., 1996: 28-34) contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range:

a. Construct a comparative boxplot for the two samples, and comment on any interesting features.
b. Calculate a 95% confidence interval for the difference between true average degree of polymerization for the middle range and that for the high range. Does the interval suggest that µ1 and µ2 may in fact be different? Explain your reasoning.