r53 -lS.fl'? Un Oy TRTIONG orr sri PHAM TPHCM KHoA v4r lf on rnr nnr Hec pHAN HKr - NH: 2008 - 200s vrON: xsrK - HB: sp + cN - oc z Thdi gian: 90' Ca.u 1 (2 ili6m) MQt siOu thi b6n 1. lopi sin phAm trong d6 c6 30oh shnphAm do c6ng ty A sdn xuAt, cdn lai do c6ng ty B sin xu6t. Ti l€ sin phAm lo4i 1 do c6ng ty A sin xu6t ld 850/o, cua c6ng ty B l 95yo. Mua I sin phAm tir siOu thf vd th6y d6 khdng phii ld sin phAm lo4i 1. Hoi khi ndng sin phAm d6 do c6ng ty ndo sin xu6t nhiAu hon? Cdu 2: (2 tli€m) Mgt t6 hoc sinh g6m 9 ngudi trong d6 c6 3 nir duoc chia thdnh 3 nh6m ddu nhau. Tim x6c s"5t dC sao cho o m6i nh6m c6 I nir. ,6^ Ciu 3 (1 <liem) X6c su6t dC n6m bong trung rd le 0,9. Phaib,rfit nh6t bao nhi6u lan dC x6c su6t c6 it nh6t I l6n n6m trung l6n hon hoac bing 0,gg? Ciu 4 (5 ili0m) SO tiQu thdng k0 v€ doanh s6 ban hirng ctra 1 cua hdng cho 6 bdLng sau: a. Nhfrng ngdy c6 doanh sd b6n tr6n 70 triQu d6ng ld nhirng ngdy b6n dit nang. Hfry uoc luong fj, 16 nhiing ngay b6n ddt hdng o cfta hdng ndy v6i dQ tin cely 96o/o. b. U6c lugngdoanh sO b6n trung binh cira I ngiy *bin dhthdng" d cua hdng ndy v6i dQ tin c4y 98 % (giiLthi6t doanh sd b6n hdng li ttai luqng ngSu nhi€n tudn theo quy luai ctruAnl c. Tru6c diy, doanh sO b6n trung binh cira cua hdng niy li 60 triQu/ngdy. SO li6u cua b6ng tr€n dugc thu thap sau khi ctia hdng 6p dung I chuong trinh khuy6n mdi. H6y cho nhdn x6t v0 c6ch thfc khuy6n m6i cria cua hdng v6i mt?c y nglfia2i/o unr Ghi chri: - Sinh viAn chi duqc str dung bdng in ph7 luc hdm phdn pht5t Laplace vd hdm. phan phiit Student. 20 -40 5 60-70 70-80 80-90 90-100 . r53 -lS.fl'? Un Oy TRTIONG orr sri PHAM TPHCM KHoA v4r lf on rnr nnr Hec pHAN HKr - NH: 20 08 - 20 0s vrON: xsrK - HB: sp + cN - oc z Thdi gian: 90' Ca.u 1 (2. mt?c y nglfia2i/o unr Ghi chri: - Sinh viAn chi duqc str dung bdng in ph7 luc hdm phdn pht5t Laplace vd hdm. phan phiit Student. 20 -4 0 5 6 0-7 0 7 0-8 0 8 0-9 0 9 0-1 00 . ld sin phAm lo4i 1. Hoi khi ndng sin phAm d6 do c6ng ty ndo sin xu6t nhiAu hon? Cdu 2: (2 tli€m) Mgt t6 hoc sinh g6m 9 ngudi trong d6 c6 3 nir duoc chia thdnh 3 nh6m ddu nhau.