Really stuck on this question, can anyone please help!!

1. The following information is provided for a stock market: Bj Asset 1 6.6% 0.4 Asset 2 9.8% 1.2 Asset 3 12.2% 1.8 Notation: ; = expected rate of return on asset j; ; = beta-coefficient for asset j, j = 1, 2, 3. (a) In the context of the Capital Asset Pricing Model (CAPM), define the 'beta-coefficient', 3;, corresponding to asset j. Discuss how assets' beta-coefficients should be interpreted and explain how their values can be obtained in practice. (b) Assuming that a risk-free asset is available, explain and interpret the Security Market Line (SML) in the context of the CAPM. Construct the SML from the given information and interpret the values of its coefficients. (c) Now suppose a risk-free asset is not available, although the other assumptions of the CAPM remain valid. How should the SML be constructed and interpreted in this case? (d) You are informed that a fourth asset, with 84 = 0.8, is available. Recent observations reveal that its average rate of return is 7.0%. What inferences, if any, would you draw from this information? [Your answer may be in the context of either (b) or (c), above.]