b. It there are ho arot For Problems 23-26, suppose Johnson & Johnson and Walgreens Boots Alliance have expected returns and volatilities shown below, with a correlation of 22%. Expected Return Standard Deviation 796 16% Johnson & Johnson Walgreens Boots Alliance 1 0% 20% 23. Calculate (a) the expected return and (b) the volatility (standard deviation) of a portfolio that is equally invested in Johnson & Johnson's and Walgreens' stock. umehtion bnoson & lohnson's and Walgreens