Suppose your expectations regarding the stock price are as follows:

Use the equations

$E(r)={\displaystyle \underset{s}{\overset{?}{}}}p(s)r(s)$ and

${}^2={\displaystyle \underset{s}{\overset{?}{}}}p(s)[r(s)-E(r){]}^2$ to compute the mean and standard

deviation of the HPR on stocks. $($Do not round intermediate

calculations. Round your answers to $2$ decimal places.$)$