2018锟斤拷锟斤拷锌锟斤拷锟斤拷锟斤拷锟斤拷W模锟組锟統試锟絵(锟斤拷)锟斤拷锟斤拷
20.(锟斤拷小锟絵锟組锟斤拷 7 锟斤拷)锟斤拷锟斤拷锟斤拷锟竭碉拷锟戒實锟斤拷锟斤拷锟斤拷全锟斤拷锟斤拷锟斤拷P注,某校锟絎锟斤拷锟斤拷锟絎锟絛趣小锟組锟斤拷锟斤拷锟剿解本校同锟絎锟斤拷锟斤拷母锟斤拷锟斤拷锟斤拷锟斤拷锟侥態锟斤拷,锟节學校锟斤拷取锟剿诧拷锟斤拷同锟絎锟斤拷锟斤拷母锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街的態锟斤拷锟組锟斤拷锟剿嗭拷锟斤拷锟絳锟斤拷,锟絳锟斤拷謩e锟斤拷浅锟劫澩�锟斤拷贊同锟斤拷锟給锟斤拷锟絕锟斤拷锟斤拷贊同锟斤拷锟侥種锟紹锟斤拷,锟紽锟斤拷锟絳锟斤拷y計锟結锟斤拷锟狡筹拷锟斤拷锟斤拷D锟缴凤拷锟統計锟紻,請锟結锟较兩凤拷锟統計锟紻,锟截达拷锟斤拷锟叫嗭拷锟絵:
(1)锟斤拷锟紷锟轿嗭拷锟斤拷锟絳锟斤拷锟斤拷一锟斤拷锟斤拷取锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絎锟斤拷,a=锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷; 
(2)請锟絘全锟絣锟轿統計锟紻;
(3)锟街★拷锟斤拷贊同锟斤拷锟紹锟饺的學锟斤拷锟剿旓拷锟侥百分憋拷锟斤拷占锟斤拷锟轿的圓锟侥角烇拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷; 
(4)锟斤拷該校锟斤拷3 000锟斤拷锟絎锟斤拷,請锟斤拷锟接嬙撔ｏ拷W锟斤拷锟斤拷锟斤拷母锟斤拷锟斤拷锟斤拷锟斤拷锟街★拷贊同锟斤拷锟酵★拷锟角筹拷贊同锟斤拷锟缴種锟紹锟饺碉拷锟剿旓拷之锟斤拷.