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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“–
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 +10  upvote downvote
submitted by โˆ—imgdoc(183)
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iaaByscll htsi nuisoetq utsj skas "tawh is orpw"e adn akss uyo to lxaeipn that 80% po.ewr roePw is 1 - taeb (pyte 2 )rrreo, alsiyablc nweh a nfedifceer extssi dna the nllu tssheoipyh is jeectred si p.orew So if het Rx estctde a amen freefincde fo 0.4 in aamths ni het nespitta in eht emtentart ,goupr tnhe htat tada llasf ni eht 08% orepw rga,ne nad its iiiafgcnnsec si 59% &p)tl.50(0;, P leuav si ustj eht apotlrybibi of thmingoes nhppigaen yb caechn, so yuo tawh thsi to eb elss ttah %5 os havteewr oyu ovedresb sit'n llhis.tbu

I ehpo this he,dlpe adn etcrcor em if 'mI nwrog.

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yssya1992  I evha a squotnie : wahts eth oairetnl hent bnweete wrope and P alevu ? +
privatejoker  sThi eno toko me a tnimeu nda saw udigrn the slta ckolb os ym brian aws rdayale drfie. utB my noenagsir aws ht,at sa stedta v,eoab encis ti agev you ,poewr it is slayaiclb jtsu a dwnngid-oel yaw fo gkasni what ePrwo i,s dna owh ihts lsteare ot -u.avepl auvPe-l si the sodd ttha het gfinidn swa edu ot ehcnac lnoea. uybvsiOlo a pu-vale tse to 0t&l0.5; pileims a eagtrer atnh 59% ccehan atth teh gidnfin si teil.g einSc het wopre is sadi to be 0%,8 thsi asnme hatt eehtr si na 0%8 hncaec atth hte yduts dfniing si ,gteil ta lseat iosncuhm htta ti emt hte rpest-e iiarcert fo bigne 95% oneah-nncc t.readel +
sahusema  0%8 nehcca prw()oe eth usdyt ycrtlcroe itfseinedi eth ntciexees of na iasctnsaioo ni irye.alt fI na aticoiansos is eteddmerin ot e,itsx %;g9t&5 ncecah het ytdus and elaiyrt reeag tiwh chae tohre ;).<05p( +1



 +8  upvote downvote
submitted by โˆ—andro(269)
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A NEOT TO IPLMSE DIENDM DSTNUEST LIEK MEYFLS ! :

stFri tSep : owePr si obptlyribia or nhceac ( tath a tusyd ilwl tectde a rute n)fceefreid . So aclcen uto ereyv lnesgi noitop atth sysa 80 % of butcjsse ( dAn I eanm ervye egnisl one fo htme )!! ihhwc si alcsalbiy eyevr gienls tpnoio omrf A to D

odcneS peSt : isth sleeav uoy tihw olyn notopi E adn F whcih aer now inosuqetign uoyr sdutenigndrna of hte p luvea ( agani a btiripboyla /cnehca ttsah a tsduy liwl dtcete a ecreefifnd ehwn onen exstsi I)n rou sdytu lal hte sleavu oinbtade reew ocatdasesi tihw a p luaev fo 5030. ei. essl ahtn 00.5.
OPNTI(O F )

iTdrh tepS : ikPc notiop F

You iwll dinf htta mots fo these snqteoius are juts a ylpa on rwsod - 80 % aibbroptliy vs 80 % of cuejstbs to ttse trhewhe ouy aresntnddu wtha eth emtr laryle emnsa

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 +3  upvote downvote
submitted by โˆ—nosancuck(102)
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cklBa ha!Pow

ohwPa = 1 - BTAE = da atre of med RUTE VPIE;ITOSS zuw ad eart ta which oyu tge ad reut ipvosiets assocr a chabnu ?diustes 08% eehr hurb

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lostweightthxnorovirus  eewvehrr you ederlna baststoi I nawna rnlae ); +12
djinn  vstiieyStni is het tear of uret osip.itvse teBa is eth reat fo fleas nei.vtsaeg +
helsinki  ... heya orye'u ynlietfdie a thwei nam +2



 +1  upvote downvote
submitted by โˆ—brasel(20)
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owreP = bitylai to ecdtte a iffdeenerc entbeew ougpsr (fi neo )Psetsix evula .500lt)(&; = paobrtiibly hatt eslstru ewer deu to rmdnoa anhcec

%08 wpreo = 8%0 ancceh fo teh dusyt nbige labe ot ecedtt ospmmyt ,hagnecs whhci in itsh sace wsa .0(A4KA 80% eaccnh of etnteigcd a cnanitisfig p lev)ua

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 +1  upvote downvote
submitted by โˆ—sahusema(173)
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08% chneca er(op)w hte dyuts rretccoyl fsentideii the texsieecn fo an caostsoniia in ey.altri If na niaoiaoscts is trndeiemde to xsi,et &t%9g5; hnecca teh dyuts and altiyer egrea wiht ehca rheot 0tl;&)5p.(

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