sequential lot$-$to lot$($attribute$)$ samping plan parta: derive the accetance line for an item$-$by$-$item sequential samping plan for which p$1=0\mathrm{.}2,$ a$=0\mathrm{.}05,$ p$2=0\mathrm{.}4,$ b$=0\mathrm{.}10$