The market and Stock J have the following probability distributions: a. Calculate the expected rate of return for the market. Round your answer to two decimal places. % Calculate the expected rate of return for Stock J. Round your answer to two decimal places. % b. Calculate the standard deviation for the market. Do not round intermediate calculations. Round your answer to two decimal places. % Calculate the standard deviation for Stock J. Do not round intermediate calculations. Round your answer to two decimal places. %