A stock will provide a rate of return of either 19% or 28%.

a.	If both possibilities are equally likely, calculate the stock's expected return and standard deviation. (Do not round intermediate calculations. Enter your answers as a percent rounded to 1 decimal place.)

Expected return	%
Standard deviation	%

b.	If Treasury bills yield 4.5% and investors believe that the stock offers a satisfactory expected return, what must the market risk of the stock be? (Enter your answer as a whole percent.)

Market risk

%