Co. have a corralasion of 0.0969, alleulate the volatily (standard deviation) of a portiolo that is 55% invested in Cola Co. stock and 45% irrosted in Gas Co. stock Cabulate the volatiry by. a. Using the formula: Var(Rp)=w12SD(R1)2+w22SD(R2)2+2w1w2Cor(R1R2)SD(R1)SD(R2) b. Calculating the monthly returns of the portfolio and computing its volatility dirncify. Data table c. How do your results compare? a. Using the formula: Var(Rn)=w12SD(R1)2+w22SO(R2)2+2w1w2Cor(R1R2)SD(R1)SO(R2) The volatility (standand devation) of the portlolo is . \%. (Round to two decimal places.) (Click on the following icon 0 in order to copy its contents into a scresdehoot)