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Problem $11-6$ Risk Premiums $($LO$1)$

Assume these are the stock market and Treasury bill returns for a $5-$year period:

$\backslash$table$[[$Year$,$Stock Market Return,T$-$Bill Return $(\%)],[2016,(\%),0\mathrm{.}2],[2017,13\mathrm{.}0,0\mathrm{.}8],[2018,21\mathrm{.}0,1\mathrm{.}8],[2019,-6\mathrm{.}2,2\mathrm{.}1],[2020,29\mathrm{.}8,0\mathrm{.}4]]$

Required:

a$.$ What was the risk premium on common stock in each year?

b$.$ What was the average risk premium?

c$.$ What was the standard deviation of the risk premium? $($Ignore that the estimation is from a sample of data.$)$

Complete this question by entering your answers in the tabs below.

What was the risk premium on common stock in each year?

Note: Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places. Negative values should be entered with a negative sign.

$\backslash$table$[[$Year$,$Risk Premium$],[2016,,\%$