$($Ch$5)$ True or False? If IBM sales representative is less than $30$ years o$($d$)=0\mathrm{.}5$ P$($an IBM sales representative is more than $40$ years o$($d$)=0\mathrm{.}2$ then P$($an IBM sales representative is less than $30$ years oldu "more than $40$ years ol $*$ d $^2=0\mathrm{.}5+0\mathrm{.}2=0\mathrm{.}7$