Consider the following information on the expected return for companies $x$ and $Y.$

a$.$ Calculate the expected value and the standard deviation of returns for companies $x$ and $Y.($Round intermediate calculations to at

least $4$ decimal places. Round your final answers to $2$ decimal places.$)$

b$.$ Calculate the correlation coefficient if the covariance between $x$ and $Y$ is $89.($Round your answer to $4$ decimal places.$)$