Problem $13-7$ Calculating Returns and Standard Deviations $[$LO$1]$Consider the following information.Rate of Retum if State OccursState of Economy necessionNormalBoomProbability of State of Economy$175033$Stock A$060914$Stock Bi$-1712\mathrm{.}29$a$.$ Calculate the expected return for Stocks A and B$.($Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e g$-3216)$b$.$ Calculate the standard deviation for Stocks A and B$.($Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16)$a$.$ Stock A expected returna. Stock B expected returnb. Stock A standard deviation$\%.$b$.$ Stock B standard deviation$\%$