please go through all the steps! (especially for Standard Deviation)

An investor is considering the purchase of Gryphon stock, which has returns given in the table below. Calculate the expected return and standard deviation of Gryphon. Round your answers to 2 decimal places. Enter your answers below. E(r)= Correct response: 8.240.01% Std. Dev. = Correct response: 5.970.01% This question has 2 parts (i.e., you will be clicking "Verify" twice) The investor decides to diversify by investing $9,000 in Gryphon stock and $10,000 in Royal stock which has an expected return of 9% and a standard deviation of 13.4%. The correlation coefficient for the two stocks' returns is 0.9 . Calculate the expected return and standard deviation of the portfolio. Round your answers to 2 decimal places. Use the correct answers from the previous question. Enter your answers below. E(rp)=% Std. Dev = %