Please show explination of how it is found :)

Below is annual stock return data on Hollenbeck Corp and Luzzi Edit, Inc. Year Hollenbeck Luzzi Edit 1 10% -3% 2. 20% 0% 3 - 10% 20% 4 5% 10% (a) What is the average return and standard deviation for each stock? (Round answers to 2 decimal places, e.g. 52.75.) Hollenbeck Corp Luzzi Edit Average return % Standard deviation % 9 e Textbook and Media What is the expected portfolio return on a portfolio comprised of i. 25% Hollenbeck Corp and 75% Luzzi Edit? ii. 50% Hollenbeck Corp and 50% Luzzi Edit? iii. 75% Hollenbeck Corp and 25% Luzzi Edit? (Round answers to 3 decimal places, e.g. 5.275.) E(Portfolio Return) 25% Hollenbeck Corp and 75% Luzzi Edit % 50% Hollenbeck Corp and 50% Luzzi Edit % 75% Hollenbeck Corp and 25% Luzzi Edit % e Textbook and Media