please help

Suppose Johnson & Johnson and the Walgreen Company have the expected returns and volatilities shown below, with a correlation of 22.2% SD (R) ER 6.3% Johnson & Johnson 16.1% Walgreen Company 9.5% 19.8% For a portfolio that is equally invested in Johnson & Johnson's and Walgreen's stock, calculate: a. The expected return. b. The volatility (standard deviation). EXID a. The expected return. The expected return of the portfolio is%. (Round to one decimal place.) b. The volatility (standard deviation). The volatility of the portfolio is%. (Round to one decimal place.)