#4 (15 points) Ten annual returns are listed in the following table: year return 1 -19.9% 2 16.6% 3 18.0% 4 -50.0% 5 43.3% 6 1.2% 7 -16.5% 8 45.6% 9 45.2% 10 -3.0% a. Calculate the arithmetic average return over the 10-year period b. Calculate the standard deviation of the sample c. If you invested $1000.00 at the beginning (year 0), what would you have at the end of year 10?