Consider a portfolio consisting of $200,000 worth of Stock A and $900,000 worth of Stock B. The standard deviations of the portfolios, Stock As, and Stock Bs returns are p = 7.7%, A = 8.0%, and B = 8.7% respectively. Calculate the correlation coefficient A,B between rA and rB. State your answer with 6 digits after the decimal point.

Show calculations and equations please! Answer provided below.

(ANSWER 0.314176)

Stock As rate of return has a standard deviation of A. The market portfolios rate of return has a standard deviation of M. The correlation coefficient between the rate of return of stock A and that of the market portfolio is given by A,M. Using only the values provided above, state the expression for Stock As beta.

this is a 2 part question but part 2 did not include an answer.