Please look close for the negative signs in the returns and please put it out 6 decimals. Thanks

Consider the following table for a period of six years: Calculate the arithmetic average returns for large-company stocks and T-bills ever this time period. Calculate the standard deviation of the returns for large company stocks and T-bills over this time period. Calculate the observed risk premium in each year for the large company storks versus the T-bills. a. What was the arithmetic average risk premium over this period? Average risk premium % b. What was the standard deviation of the risk premium over this period? Risk premium standard deviation %