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P 12-15 (similar to) Question Help E[R] Suppose Johnson & Johnson and the Walgreen Company have the expected returns and volatilities shown below, with a correlation of 22.7%. SD [R] Johnson & Johnson 6.8% 16.5% Walgreen Company 10.2% 20.4% 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). a. The expected return. The expected return of the portfolio is %. (Round to one decimal place.)