π = ( 0.3   0.7    0.6   0.4      )        ( 33  )    MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaaiiGacqWFapaCcqGH9aqpdaqadaqaauaabeqaciaaaeaacqaIWaamcqGGUaGlcqaIZaWmaeaacqaIWaamcqGGUaGlcqaI3aWnaeaacqaIWaamcqGGUaGlcqaI2aGnaeaacqaIWaamcqGGUaGlcqaI0aanaaaacaGLOaGaayzkaaGaaCzcaiaaxMaadaqadaqaaiabiodaZiabiodaZaGaayjkaiaawMcaaaaa@40EC@