a)Mary Guilott recently graduated from Nichols State University and is anxious to begin investing her meager savings as a way of applying what she has leared in business school Specifically, she is evaluating an investment in a portfolio comprised of two firms' common stock. She has collected the following information about the common stock of Firm A and Fire 5 points Save Expected Returns Standard Deviation Firm A's Common Stock 0.15 0.11 Firm B's Common Stock 0.11 0.06 Correlation Coefficient 0.5 If Mary decides to invest 10% of her money in Firm A's common stock and 90% in Firm B's common stock, what is the expected rate of return and the standard deviation of the po