need help with right answers to red boxes

2 Calculate the expected return, variance of returns, and standard deviation of returns for the two companies below: Probability Probability Ditt Squared Strength of Economy Strong Normal Weak 0.30 0.40 0.30 1.00 Martin Corporation Return in Return Economic Difference Diff Squared State 80% 24.0% 56% 0.3136 10% 4.0% 6% 0.0036 -60% -18.0% -42% 0.1764 Exp Return 10.0% Variance: Std Dev 0 09408 0.00144 0:05292 0 04948 22.2% Probability Strength of Economy Strong Normal Weak 0.30 0.40 0.30 1.00 Jones Corporation Return in Return Economic Difference Diff. Squared Probability Diff Squared State 15% 4.5% 11% 0.011025 0.0033075 10% 4.0% 6% 0.0036 0.00144 5% 1.5% +7% 0.004225 0.0012675 Exp Return 10.0% Variance: 0.002005 Std Dev 4.59 3 which is the more risky investment? Martin