Stock A has a 22% possibility of performing well in the next year, which will produce a 24% stock return on investment. There is a 38% chance that stock A will perform good, and produce a return of 22%. Also there is a 45% possibility Stock A will have a modest performance , and will only produce a return of 12%, and there is a 12% chance that stock A will perform bad, and produce a negative return = -7%. There is a risk free rate of 6%. Calculate the risk premium ,expected return, standard deviation, and variance of stock A