1. Econ.	Prob.	T-Bill	Ultra Inc	Repo	American Foam	Market portfolio
   Very week	0.1	8%	-22%	28%	10%	-13%
   Below average	0.2	8	-2	14.7	-10	1
   Average	0.4	8	20	0	7	15
   Above average	0.2	8	35	-10	45	29
   Strong	0.1	8	50	-20	30	43

   If someone invests 25%, 40%, 25%, and 10% of his/her investment on T-Bill, Ultra Inc, Repo, American Foam respectively, calculate the portfolio return and portfolio standard deviation.
2. If the market risk premium is 7% and beta for Ultra Inc is 1.5, what is the required rate of return?
3. If the beta for Ultra Inc is 1.5 and beta for Repo is .75, and you invest 50% of your total investment in Ultra Inc and rest 50% on Repo, what is the beta of your portfolio?