please help me

Build a spreadsheet to answer the following question. Please provide steps please. I 1. Calculate the probability-weighted return and standard deviation for each of the stocks below. State of the Economy Recession Below Average Average Above Average Boom Probability .10 20 Return for Stock A 20% 15% 12% 2% -10% Return for Stock B -30% 0% 10% 15% 25% Return for Stock C 40% -10% 15% 30% 45% 40 20 .10