The Treasury bill rate is \4, and the expected return on the market portfolio is \12. According to the capital asset pricing model: a. What is the risk premium on the market? b. What is the required return on an investment with a beta of 1.5 ? Note: Do not round intermediate calculations. Enter your answer as a whole percent. c. If an investment with a beta of 0.8 offers an expected return of \9.8, does it have a positive or negative NPV? d. If the market expects a return of \11.2 from stock \\( X \\), what is its beta? Note: Do not round intermediate calculations. Round your answer to 1 decimal place