1. You have a stock portfolio that consists of the following positions (price and beta as of 4:28 PM on 4/1/2020): Shares Price Beta Amazon 25 $1,907.70 1.54 Apple 90 $ 240.91 1.29 Tesla 85 $ 481.56 0.48 Costco $ 286.78 0.92 Disney 50 $ 94.92 1.04 75 (a) What is the portfolio beta? [Hint: You will need to compute the weights for each stock.] (b) If the market return is expected to be 3% and the risk-free rate is 0.5% then what is the required rate of return of the portfolio