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

a$.$ Calculate the expected rate of return, hat$(r{)}_B,$ for Stock $.)$ Do not round intermediate calculations. Round your answer to two decimal places.

b$.$ Calculate the standard deviation of expected returns, ${}_A,$ for Stock $.)$ Do not round intermediate calculations. Round your answer to two decimal places.

c$.$ Assume the risk$-$free rate is $3\mathrm{.}5\%.$ 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:

Are these calculations consistent with the information obtained from the coefficient of variation calculations in Part $b?$