*please show excel formulas*

4. Assume you can invest in two assets over the next year. The first one Alpha has an expected return of 10% and -2% with equal probability and the other Beta an expected return of 4% and 2% with equal probability. a. Calculate the expected return and volatility for each of the two assets. b. Calculate the expected portfolio return if you invest 60% into Alpha and 40% into Beta c. If you make the investment under b), what will be the expected new portfolio weights after a year