I hope the answer including the Formula , without using the Excel

You have been provided the following data about stock A and stock B. The covariance is 0.0015. State of Economy Bear Normal Boom Probability of State of Economy 0.30 0.50 0.20 Return on Stock A -0.020 0.14 0.20 Return on Stock B 0.035 0.060 0.090 Based on the above information, calculate: i. The expected return of stock A and B. (8 marks) ii. The expected standard deviation of stock A and B. (8 marks) iii. The correlation between the returns of the two stocks. (4 marks) iv. Based on your answer in (iii) explain the implication in diversification