I want the answer with all steps plz.

tate probability Return on RETURN ON A B POOR 40% -0.08 -0.16 NORMAL 35% 0.23 0.14 GOOD 25% 0.2 0.2 Weight a Weight b 4 .6 what is the return of stock a 10.098 what is the return of stock b 0.035 what is the standard deviation on stock a? 14.623 what is the standard deviation on stock b? Time left 0:14:51 14.623 what is the standard deviation on stock b? 16.085 what is the coefficients of variation on stock a? what is the return of the portfolio? what is the covariance between a and b? what is the correlation what is the standard deviation of the portfolio