Problem $11-18($Algo$)$ An index model regression applied to past monthly returns in Ford's stock price produces the following estimates, which are believed to be stable over time: $\backslash [$ r$\_\{$F$\}=0\mathrm{.}10\backslash \%+1\mathrm{.}1$ r$\_\{$M$\}\backslash ]$ Required: If the market index subsequently rises by $\backslash (8\mathrm{.}3\backslash \%\backslash )$ and Ford's stock price rises by $\backslash (8\backslash \%\backslash ),$ what is the abnormal change in Ford's stock price? Note: Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to $2$ decimal places. Abnormal return