Pembahasan Ujian PAI: A70 – No. 1 – November 2014

maka dapat mencari
\({\rm P}\left[ {\left| {X – \frac{1}{2}} \right| > \frac{1}{4}} \right] = {\rm P}\left[ {X – \frac{1}{2} > \frac{1}{4}} \right] + {\rm P}\left[ {X – \frac{1}{2} < – \frac{1}{4}} \right]\) \({\rm P}\left[ {\left| {X – \frac{1}{2}} \right| > \frac{1}{4}} \right] = {\rm P}\left[ {X > \frac{3}{4}} \right] + {\rm P}\left[ {X < \frac{1}{4}} \right]\) \({\rm P}\left[ {\left| {X – \frac{1}{2}} \right| > \frac{1}{4}} \right] = \left( {1 – F\left( {\frac{3}{4}} \right)} \right) + F\left( {\frac{1}{4}} \right)\) \({\rm P}\left[ {\left| {X – \frac{1}{2}} \right| > \frac{1}{4}} \right] = 0,3125\)