$9\mathrm{.}25.$ Suppose you are considering two investments, and the critical issues are the rates of return $($R$1$andR$2).$ For Investment $1,$ the expected rate of return $($$1)$ is $10\%,$ and the standard deviation is $3\%.$ For the second investment, the expected rate of return $($$2)$ is $20\%,$ and the standard deviation is $12\%.$