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Retired NBME 21 Answers

nbme21/Block 4/Question#11 (reveal difficulty score)
A study is conducted on patients with asthma ...
If the treatment really changes the mean asthma score by 0.4, there is an 80% chance that a study of this size will find a p-value < 0.05 ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biostats

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 +10  upvote downvote
submitted by โˆ—imgdoc(183)
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caalsiylB siht estonqiu ujts sask tha"w si ro"wpe adn ksas ouy ot pxliane ttha 80% opwe.r rwPoe is 1 - ebta type( 2 rrreo,) slacliaby wnhe a renfeidfec ssetxi dan hte lunl oetpsshyih is erejdtec is porwe. oS fi the Rx ecdetts a enma iefnredcfe of 04. in atmsah ni teh pnttiaes ni the tmneaertt pu,org neth thta dtaa llfsa in teh 8%0 opwre ,range nda tsi cicginniaefs is 5%9 ,tlp00;)&.(5 P eauvl is stju eht yiabilprbto fo mgeshntio phnegpain yb hanc,ec so uyo awth hits to eb less ttha %5 os waeevrth uoy bresdoev 'tnis luhi.bstl

I hepo sthi pl,dehe dna rceocrt me if I'm .gnrwo

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yssya1992  I vhae a squetnio : wtahs eth narotile ehtn enwbtee wepor nda P laeuv ? +
privatejoker  Tshi noe otko me a tnemui nda swa idgrun hte tsal bolkc so my arbni swa rladaye i.refd uBt ym rnesoagni asw ta,ht sa dsetta beavo, isenc it vgae ouy rwpo,e it si absyciall jstu a iwnelodgd-n way of ikasng hwat roweP ,si nad how ihst rsaetle ot -evp.lua P-uvela is eth dods atth hte fiindng swa ude to acchen eol.na uolivOsyb a vulape- ets to &l5t0.0; emlsipi a regarte naht 95% cnheca taht the dngifin si el.igt nieSc eht woerp si aids to be ,8%0 shit smane atht ehrte si na 80% hccnae taht eht ydstu indfing si gliet, ta tlaes shonimuc atth it etm eth srpee-t icrriaet of egbin %59 n-chaocnen atlr.dee +
sahusema  80% eachnc oerp()w the tyuds trcyrcelo tfiineesid teh setnxeice of na itncsooiaas in la.rtiey fI an aistisooacn si demdteerin ot s,ixte gt;5%9& ehancc eht ydsut adn yiatler aereg wiht caeh othre &.t50p;l)( +1



 +8  upvote downvote
submitted by โˆ—andro(269)
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A NEOT TO PSEMIL DDENIM TEUNTSDS ELKI LESMYF !:

stFir tpSe : oePrw si boybrtailip ro henacc ( atht a tyusd wlil ttceed a reut eeif)dfrnec . oS nccael uto veyer nlgsei nioopt ahtt yssa 80 % of jusscebt ( And I anem vyeer gnlesi one of mthe !)! ihcwh is iaybcslal eervy sielng otpion mrof A to D

eocSnd tpeS : itsh esealv yuo whit ylno itoopn E dan F chhwi aer nwo egsntinuoqi ryuo sreaudinntndg fo hte p veual ( aiagn a iloypbrbtia n/ceahc tthsa a tudsy ilwl ctedte a iefrdecefn ehwn enno tsixes I) n uro sudty lal teh eavlus idtaobne wree sdaecitsao twhi a p luaev fo 0350. ei. sesl htan 005..
IT( POON F )

idTrh petS : Pcik ntoipo F

ouY llwi nfid htta osmt of ehtse sseutqnoi ear juts a pyla on wrdso - 08 % ibtrbiayolp vs 08 % fo tsusecjb to estt weherht ouy nrdunedsta awth eth mter arlyel mensa

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 +3  upvote downvote
submitted by โˆ—nosancuck(102)
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kBcla Pawho!

Powah = 1 - BETA = da reat of mde RETU IISTP;OEVS wzu ad trea ta hhiwc uoy tge ad etur oipvsiest oarscs a nhuabc us?itdes 08% eerh hubr

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lostweightthxnorovirus  ewrhreev uoy aderenl bsitasot I anwan elrna ); +12
djinn  niitivteysS si eht atre fo teru oiv.setisp ateB si eth raet fo efals .tagsevein +
helsinki  ... eyha rueo'y tldifyneie a iwthe man +2



 +1  upvote downvote
submitted by โˆ—brasel(20)
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ewoPr = bitlyai to etecdt a efdenrfeic nbetewe rgupso fi( one ePxs)is t auelv &;(00)tl.5 = tipyobarbli tath utlssre wree ude to draonm henacc

80% eorwp = 08% heaccn of the sudty eginb laeb to tedect spmymto ,geanhcs hwhci ni sith saec swa 4.(K0AA %08 acnceh of ctdeigten a ianctgisnfi p ula)ve

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 +1  upvote downvote
submitted by โˆ—sahusema(173)
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%08 eahccn )orep(w eth yudts oytcrrlce iniitesfed het icetxsene fo na incoiasasto ni iteryl.a If an toisacnosai is mridetndee to exits, &g5;t%9 cnchea eth yutsd and ileytra agere thwi aech ohtre t&();l5.0p

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