Lra'u lrqr Ii.l ilt' lht c I ), i , ,i) I 4&b ,lhrin /QL 'i 'tre,'ri\€ r Tr-,Ee e:E l l _i I ligh3, A ibl6bde ehon cig sai y', Chgrr mEu B Chqn m6u (p Clngn mdu D Chqn l:tiu 9.f6c.r6u rn6.u: ehon ,i *qludng giu sar px(L- n: T2 "-al-a,,2 -7Khi mric d6n c,}ng rh*c ti*& co i Prt nghia bing 0,05 thi gi6 A.0,96 tri Z sF tA: B 1,645 o,l 1Q t,96 c,s,r- ?-,58 o,or i 1.!y chgn miu li, chon clugg;! A Kl6ng dri nh6n lgc, vflt l1rc[i"f, phi, thbi gian B= Sai sti di€u tra toan th6 _stfnh_gi6 tr! cria nghi&r l1ns U) D Miu dg lcrn s€ ngo4i suy todn quAn th6 ; rr,6"a 12 r*ql6ng thr?-e iior,'[s6* nghi€n crlu bQnh chrtng g tLd m6r cht thA mn €.:.Fr d€, dAy ,.,a -"2iTraag mQt ngi:i6n "9".? u6ng ruqu, ngu&i ta nh6rr thA_.r ring: irona m6r trlm ngu'di bi b€rrFr da tqt ?q 50 ngu.ir.l rEr,gvd trong.1 nguoi bi-benh 6e a.i,y T.q": thi c6 25 nguitt u6ng rugu.49rlg NgFti,Sn ctm ni;., thu$c: A nghiEa ciru doia bf Anghi6n cr?u cit nganB p-lrrghi€n ciru b€nh chring e D nghi€n cr?u -tuang quarr 33 DC nr6 ti mQt-bitln dinh iugn,g li6r-r ruc kh6na c6 ph6n pnai enuAn ta d-irng sia fii ,;"t ay Fe "a" m6 tA? A Trung bintr vi tr,un;g vi htong eueur Ii:\-)ciip hinh thin_h gi* thuydt i'B nri5i quan hf J nF,'6n qu| z ]" Thy thflp dugc th6.ng tin tr€n ttng c6 th6- \ l I(i6m_so6t duoc ydut6 gay nhitiu VE ] Chi cAn khio s6t crlc tnatt mQt cQng n3qr-r "a d6ng :9/ Iino c.au dune I-f" UEt eAu nghi€n crlu dod:n rQ ti€n cr?u, cic ddi tugng dugc chon dua vi.o rcng nghi€n ctru ldr: I Nhihe nguUi bi b€nh l) Nhiing ngubi kh6ng bibenl,,,' t Nhting ngubi c6 ti6p xric vdi viiu t6 tusns tdc ) Nhihrg ngugi c6 ti6n sri gia Ainh mic bQnh O/ Chon d-an s6 thtrc nghigm cho thfr nghipm din: bio c?c ifi6u sau Aav,-SqaI =rm_.sing cAn K:A Dri cd mdu nghi€n criu ,R Dn k6t quA e6 aanh eia '$ Loai bo drrq-c sai sSio nhd lai D Th6ng tin dAy dt vi chinh xric ii Tin cf,u.Brinq Trgng nghi€n cfru, ngudi ta nl duoc qi 19 mdi mic nh6rn pboi nhiEm 2!o,'o, qi 1g md'i rnic nh6m kh6ng phoi ri€m h 5oA Ta c6 rh6 tinh duoc: B I-.i"n biy c6c kiSt qui dlra rr€n cfucbhng bidu vi tt6 thi C C6c s6, aA dugc nr6 t6 dtra rrOn "6n k€ c6c gi6 tri th6ng (lg, D Trinh bly s9 auOl dqng nhu: trung binh, tnurg vi, tdng s5, khciang,, ct$ le;h chu6n, fj' lQ 35 Nguy€n flic ph6n tich s6 figu lir drra vio: A Mu-b ri€u vi thiiit k;5 nghiCrir criu B Tharrg elo lud.ngiloAi dt ki,?n C SU tharn khAo y kiiSn criacLuy€n gia th6ng ke '@ ;ar cd 36._Tir.tr trung vi cria d6y ser ii{u ;;au: l; 9; g; 3: +; y-tr€n l.i -tAr Yq @ 8.6 D.li I uA m€: DE rhi mdn: {-ir, thi: Ngi:y ttri; lt1/28\4 E*.rrs s6 l;eu t:5rog(t'dng cAm) c6 tic dung gi? A Co th€ girip d.uqc ehc viQc bi€n so4n c6ng cE thu thQp sti LiQu theo dtng dinh hu6ng nghi€n ctru e C'i'np dinh huong ph6n tieh si5 ti?Y 04 J;: Ciftb 14p khu6n cho viQc nhQ'p sd ii€u Y/ ' b,, A vir B ilirng i:E{ f"t^g *u pf,att tan (dO phan tin, dO bi6n i€n cria cic quan s6t) bao gdm cic gi6 tr! sau, sqai trir A Khoing B Phusne sai aO,Mode -9 na l6ch chuAn li r*rtng cich thrlc dirng dC trinh trlwdidiy 7/ nghi€n cuu, NGQAI-IRU: li€u Ly ehcdt quy ctruf,n A vdn bin B c5c bing phin phAi tln s5 c bi6u c6, aa tni D bin eO Aicn t€ 'a 0/ Du6i elfly lim6.t si5 ti€u chuAn c-&a mOt bi6u & t6t, xco+r rntr: vi chri thich cAn thi6t cira o" Fuai bi6u "r-ailc,i'-a dd pnai c6 t6n vi dsn v! lubng tr€n c6c tryc - rni"n ho-p vdi mgi lo4i si5 tigu cin trinh biry Ur\ xo riung, dE xem, dE hi6u, c6 nlng.tu ginF thich cao nhdt.z gg-Tin31[g-A$e BiAu dO dang etgdng the"e line) thutmg bi8u th[ hudng thay d6i cria m$t oejs6li9u eiq6liQu nio tl6 theo: Qy)ttrtri gian B kh6ng gian C ngudi D ci ba d€iu ctirng 42/ Tim ciu tl6ne T6 chric dti thuirng dtng d0 d s'{ bi€u thi: A s6 ligu cfia m$t biiin sii ainfr dan]n , B. s6 li€u cua mQt bi5n s6 lien tuc sO li€u cfra mQt biSn s6 thrt h4ng t D BviCdring n* nculfr,nt CrL''LJ KHoA Hc,Dc XN{ Edi t*gng dr;'th!: V, EE, IPs' K25' REEfv!36, iDD Tir6'i gien lbsn hbi: phtlt x S tr3rn - };t*i K3', 43i Tirm ciu die.!Le Ir4pe dich eria bin iu$n k6t quA li giii thich vh phAn tich: A cdrc thiet kii dd, tiucv c 6.p Cgng nghi€n cuu nghiOn cuu ! c6e glai ph4p cil srb durrg lF} cac k6t quA dpt-dugc tu nghi€n einr AB V cic th6ng tin cin dat duo c tir nghiGn cr?u \{-'z 44l Tim ciu it6ne Khi.viiSt pharr d4t v6n dB c0a mQt bii b6o khoa hgc, cin phii tri ldi c6u h6i sau lQv: G),ei phii ti6n hi,nh nghi€n-efu ni5i K nghi€n ciru niy nhlm tim tri€u nhihrg didu gi C nghi€n crhr s€ tluo.c ti€qhimh & ctilu D nghi€n crlu niy dugc ti6nhanh bing c6ch n&o 45/ fim ciu d6ne KOt qui ngtri€n cinr dugc trinh bly tong bli bio lihoa hgc cAn tu&r theo: A pha" bin luin phAn trinh-bny ktit qui tfe) nghi€n crlu tl6 duqc thiiSt Ep Y ^Vrti€u ttriiSt k6 nghi€n cr?u dd ttugc ph6t tri6n P b D- phuong phap phen fich thdng kd m6 tA 46i Tim ciu d6ne Khi vi6t phan "k6t quA nghi€n tt""g bai bA khoa hqc, cin phei tri l&i ciu ".ir" h6i sau ddy: A nghiencriu dugc thi€t ke ntru th6 nio? G)ttehie" crtu niry itdtim drrgc nlriine tliiu gi? /Y nghi€n ciru niry c6 giitri nhu th6 nio? D Nghi€n crtu niy tra lbi cdu h6i gi? 47l Tim ciu rl6ne Khi vi€t pheq tdng quan tdi tigu cta m$tbio c6o khoa hgc, cAn lya chgn cic tai/i$p c6li€n quan mAtthietv6i: tAJnOi dung nghiSn ctnre"B1 e6i tuggg vi phuong phap nghi€n oriu C logi thiCt ke nglri€n criu frng dung D hoin cinh ngtri&r cfnr ilf, thgc hiQn 48/ Trinh biy cic ly dln diin vigc lua chQn mQt vin tti nghi€n ctiu, cln phiri nOu nhting eli€u c1u6i cl6y, NGOAI TRtt: n ri6ill!ffig-ffi;tu, B Ai A Qi dE nghi€n cinr vdn t16 niY? Hq d6 nghi€n c(ru nhimg gi? itau" ti€u nghi€n crlu c6 dpt duoc kh6ng? 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