use the required formulas and not in Excel spreadsheet please

a. Suppose that Cuphead plc and Ori plc have the following expected stock returns in three different states of economy (boom, normal and bust state): EQUIRED: i. Calculate the expected return and standard deviation of the Cuphead and Ori stocks. [10 marks] ii. Calculate the correlation between these two stocks. [5 marks] iii. Suppose that you are holding a portfolio that has \\( 4,000 \\) invested in Cuphead and \\( 6,000 \\) in Ori. Calculate the expected return and volatility of your portfolio