Carlton, the analyst at Yes, We Can Investments Limited, predicted the following economic conditions for 2022: weakest, weak, normal, strong, and strongest. The table below shows the five economic states' probability and estimated market return. Economic states Weakest Weak Normal Strong Strongest Probability 0.25 0.20 0.15 0.28 0.12 Market return -18% -5% 15% 17% 19% a) Calculate the range of the market returns. b) Calculate the mean market return for 2022, c) Calculate the median of the market returns d) Calculate the variance of the market returns" e) Calculate the standard deviation of the market returns. f) Comment on your results ( ..).