(TCO 2) Given the data below, calculate the expected return,
variance, and standard deviation of the following company. In a
recessionary economy, which is expected to occur with a 30%
probability, the expected returns would be -5%. In an expanding
economy with an expected probability of occurrence of 20%, the
expected return would be 10%. In a normal economy, expected to
occur 50% of the time, the expected return would be 5%.