Problem $12-10$ Calculating Real Returns and Risk Premiums $($LO$1)$

You've observed the following nominal returns on Regina Computer's stock over the past five years: $12\%,-12\%,19\%,24\%,$ and $10\%.$ suppose the average inflation rate over this period was $2\mathrm{.}5\%$ and the average T$-$bill rate over the period was $3\mathrm{.}2\%.$

a$.$ What was the average real return on Regina's stock? $($Do not round intermediate calculations Round the final answer to $2$ decimal places.$)$

Average real return $$

b$.$ What was the average nominal risk premium on Regina's stock? $($Do not round intermediate calculations Round the final answer to $2$ decimal places.$)$

Average nominal risk premium $$