using expected value method to solve this problem, include EXP NPV, Sigma

Economic Scenarios Probability of Economic Scenario NPV for Project A NPV for Project B Robust Economy Fair Economy 0.20 $2,300,000 $5,000,000 0.60 $450,000 $680,000 Weak Economy 0.20 -$150,000 -$700,000 After accounting for both risk and return, which investment should be selected? The projects are mutually exclusive