solve please with details

1- Suppose you have 5-year annual data on the excess returns on a fund manager's portfolio ('fund ABC') and the excess returns on a market index (where ric is the return on fund ABC, r, is the risk-free rate and is the return on the market index): Year: Excess return on fund ABC Excess return on market index AC: - 1 14.0 16.0 2 32.0 21.7 11.6 6.0 4 21.2 16.2 5 17.4 11.0 3 What is the estimated alpha (a ) for Fund ABC? (1 Mark)