“…We apply disjointness techniques (Bennetts, 1975(Bennetts, , 1982Abraham, 1979;Rushdi, 1983a,b;Schneeweiss, 1984Schneeweiss, , 1997Rushdi and Goda, 1985;Rushdi and AbdulGhani, 1993;Rushdi and BaRukab, 2005a,b) to each of the parenthesis in (11) individually, i.e., without spoiling the statistical independence of the entities in parentheses, viz.,…”