12. Consider for example that the following possible returns with their associated probabilities of occurrence as forecast for an investment in Amelia's Blocks, Inc. stock. State of the Economy Probability of Occurrence Return Expansion and Growth 15% 12% 10% 9% Moderate Growth Flat no Growth 45% 5% Weak 30% -4% 13. You have earned the following returns over the last four years. Determine your average return over the period. Year Return 2019 9% 2018 5% 2017 (3%)% 2016 7%