:

%	%
36 30%	24 30%
18 40%	18 40%
6 30%	12 30%

:

[ ] - ( ) ( %) . .

[] - (%) (12 %)

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You have the following information about shares A and B:

Arrow A	Arrow B
Yield % Probability of Verification	Yield % Probability of Verification
36 30%	24 30%
18 40%	18 40%
6 30%	12 30%

required: [1] - If you know that there is a portfolio made up of these two stocks at a ratio of (40%) for stock A, (60%) for stock B. What is the expected rate of return and standard deviation? For this fact?

[2] - If you know that there is another bag whose expected return is (15%) and whose standard deviation is (12%), which bag is better from your point of view?