PLEASE show work AND equations used!!

Based on the following information: Rate of Return If State Occurs State of Probability of Economy State of Economy Recession Normal Boom Stock B 21 51 28 Stock A 09 12 17 13 30 Calculate the expected return for the two stocks. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Expected return Stock A Stock B Calculate the standard deviation for the two stocks. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Standard deviation Stock A Stock B