You have estimated the following probabilities for earnings per share of companies A and B
![2007_Tab 02.jpg](https://secure.tutorsglobe.com/CMSImages/2007_Tab%2002.jpg)
a) Calculate the mean and variance of the earnings per share for each company.
b) Explain how some investors might choose A and others might choose B if preferences are based on mean and variance.
c) Compare A and B, using the second-order stochastic dominance criterion.