You$$ve observed the following returns on Pine Computer$$s stock over the past five years: $17$ percent, $4$ percent, $20$ percent, $12$ percent, and $10$ percent. Suppose the average inflation rate over this period was $2\mathrm{.}7$ percent and the average T$-$bill rate over the period was $5\mathrm{.}4$ percent.

a$.$

What was the average real risk$-$free rate over this time period? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What was the average real risk premium? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$