3. (20 points) ISLR Problem 6.8.11, parts (a) and (b) - do not consider PCR in your approaches In part (b), be sure to discuss trade-offs related to prediction accuracy vs. interpretability. This problem is more open ended than the previous two, and part of your grade will be based on the process you choose to evaluate various models and your reasoning for choosing the best model (or set of models if you propose more than one)