Suppose Johnson & Johnson and the Walgreen Company have the expected returns and volatilities shown below, with a correlation of

22.7 %22.7%.

	Upper E left bracket Upper R right bracketE [R]	SD left bracket Upper R right bracketSD [R]
Johnson & Johnson	6.2 %6.2%	16.2 %16.2%
Walgreen Company	10.5 %10.5%	19.1 %19.1%

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).

Please do the a and b question!!!!!