Karim is deciding whether to invest his capital in the Carletto Fund or the Josep Fund. To inform his decision, Karim decides to examine past portfolio returns. (a) Describe the decisions Karim must make when sampling portfolio returns. Are there any specific difficulties Karim might face when sampling portfolio returns? (2 marks) [Type your answer here] (b) After sampling portfolio returns for both funds, Karim performs regression analyses. Karim arrives at the following regression estimates for the Carletto Fund: rp,t = rf,t = a + (rm,t rf,t) + t = 0.054 +0.957. (rm,t rf,t) + Et - - Karim arrives at the following regression estimates for the Josep Fund: rp,t rf,t = a + B(rmt - rft) + t = -0.044+0.894 (m,t = rft) + Et - If we assume all estimates are statistically significant and Karim sampled returns at the yearly frequency, how should we interpret the Karim's alpha (a) estimates? (2 marks)