will thumbs up if both are done.

What is the standard deviation of a random variable q with the following probability distribution? (Do not round intermediate calculations. Enter your answer in numbers not in percentage. Round your answer to 4 decimal places.) Suppose your expectations regarding the stock price are as follows: Use the equations E(r)=p(s)r(s) and 2=p(s)[r(s)E(r)]2 to compute the mean and standard deviation of the HPR on stocks. (Do not round intermediate calculations. Round your answers to 2 decimal places.)