Let's say you invested in WXYZ Corp. beginning in 2018, and that the firm's return was 3\% in 2018, 9\% in 2019, -11\% in 2020, 21\% in 2021, Then what is the variance of the returns? 13.30% 6.54% 1.77% 3.12% Same facts as above: what is the 99% profitability range (i.e. the 99% confidence interval) of WXYZ Corp.'s returns? [28.82%,39.82%] [20.58%,31.58%] [7.80%,18.80%] We do not have sufficient information to answer this question. Question 8 2.5p Same facts as above: what is the geometric average of WXYZ Corp.'s returns from 2018 to 2021? 5.50% 5.32% 4.86% 4.53%