An portfolio manager is looking at the performance of a particular investment and the information is provided in the table below: PeriodReturn % Required : 1 2 3 4 1. Calculate the mean . 5 6 2. Calculate standard deviation using the table method. 7 8 9 10 11 12 6.0 2.5 -1.2 -2.6 5.5 1.6 -3.9 4.5 8.6 5.4 13 9.0 16 6.0 17 6.0 12 15 7.5 -15 -6.9 14 3 Construct a 99% confidence interval estimate of the population mean return of the investment 4. Do you think that the advisor has the right to state that the portfolio will reap a return of 12% 5. Must you assume that the population of return is normally distributed? Explain your answer 6. Is this assumption seriously violated? 13 14 15 16 (Hint: Answer to one decimal place) 17 18 19 20 21 22 2325 24 25 12 -13 -2.0 15 26 27 2810 2912