You purchased shares of Sky Mobile stock 5 years ago and have earned annual returns of 36.9 percent, 41.3 percent, -28.7 percent, 3.0 percent and 9.6 percent. What are the average return and standard deviation? (Hint: Use the "sum plus" button.) 1) 12.42%; 28.38% 2) 22.96%; 41.23% 3) 23.90%; 49.95% 4) 10.64%; 13.33%