We reduce the two samples to one by working with the differences between the paired observations, as in the following layout for two treatments
Annaga oo wali ku gudo jirna qodobhoosaadka iskuqodbidda labo erey, tusaalayaashan soo socda waxay inoo caddeenayaan sida ay tibixi u baabba'ayso, ka dib markii ay laba erey oo isku xigaa isku darsamaan.