<prompt> 5.3-3. Acha X_1 na X_2 ziwe vigeu vinavyojitegemea bila mpangilio na vitendaji vya uwezekano wa msongamano f_1leftx_1right2 x_1, 0 x_1 1 , na f_2 leftx_2right 4x_23 , 0 x_2 1 , mtawalia. Kokotaa P kushoto0.5 X_1 1kulia. na left.0.4 X_2 0.8kulia.  <response>: 1.44 