Your company is deciding to invest in $4$ investments during the coming fiscal year an the investment analyst came up with the following Investment Rate of Return Probability Exp.Ret. Deviation from Expectation Squared$($pri$)110\%0\mathrm{.}25(-10-12)^2(\mathrm{.}25)=25\%0\mathrm{.}30(512)^2(030)=3+20\%0\mathrm{.}254+40\%0\mathrm{.}20$ TOTAL $1\mathrm{.}00\_\_\_\_\_$ Risk $=($Variance$)0\mathrm{.}51.$ The expected return is $\_\_\_\_\_\%2.$ The Risk $=\_\_\_\_\_\%3.$ Based on one standard deviation the return could be as high as $\_\_\_\_\%$ or as low as $\_\_\_\_\_\%4.$ What is the level of certainty when using one standard deviation? Meaning?