Stocks A and B have the following probability distributions of expected future returns:

Probability A B

0.1 (7%) (20%)

0.2 5 0

0.4 15 21

0.2 20 26

0.1 28 44

1)Calculate the expected rate of return,r b, for Stock B ( r a= 13.10%.) Do not round intermediate calculations. Round your answer to two decimal places.

_____%

2)Calculate the standard deviation of expected returns, A, for Stock A (B = 17.01%.) Do not round intermediate calculations. Round your answer to two decimal places.

_____ %

3)Now calculate the coefficient of variation for Stock B. Do not round intermediate calculations. Round your answer to two decimal places.

______

4)Assume the risk-free rate is 2.5%. What are the Sharpe ratios for Stocks A and B? Do not round intermediate calculations. Round your answers to four decimal places.

Stock A: ____

Stock B: ____

please answer all parts thankyou !