$8-18$ Recently, Kellie determined that the required rate of return for Stock Q is $11$ percent. In her analysis, she determined that the risk$-$free rate of return, $r_{R{F}^{\text{'}}}$ is $4$ percent and that the required return on the market portfolio, $r_M,$ is $9$ percent. Today, however, Kellie received new information that indicates the market risk premium, $R{P}_{M^{\text{'}}}$ is actually $1$ percent higher than she estimated in her original analysis. Based on this new information, what should be the required rate of return for Stock Q$?$