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Retired NBME 15 Answers

nbme15/Block 3/Question#48 (reveal difficulty score)
A paper says, "We chose the sample size to ...
5%, Type I error ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biostats repeat

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submitted by โˆ—cassdawg(1780)
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nI ysehitshpo isetgnt, het alaph lveua is teh boabitylpri of nkamig a ypTe I erro.r iThs si het etpy fo rreor odmeintne ni het iqosteu.n

  • ypTe I rorre - uyo dinf a cdnfeferie ehnw a dinefecfre endtos' aryell .eixst
    • neO ayw fo imbrngereem thsi is atth tsih is wtah ststieiscn "twna" ot :meak ehty nawt ot ifdn a icfininsagt erfidefcen in htier ta,ad uhts it si the fsr"it tmksea"i tehdy' meka.
    • Aaplh si teh ialyiotbrpb ouy rea iwilnlg to tpccae thta yuo lcduo ahev mdae a yetp I orrer (e.i. an lhpaa veaul fo .050 anmes hreet si a 5% boytlabprii oyu cduol akem a yept I orrer adn etrcje het null phtyhesois nwhe you lodsuh to)n

  • Tepy II error - uoy do not nfid a cnfreefdei enhw uyo ldshou veha ubaecse a uetr cerefidfen rlalye ssxiet
    • aeBt si eht itriobpylab atth uyo kame a peyt II rorre
    • erPwo si auqle to 1( - e)abt
    • Prwoe acn be caseeindr by agcisrneni pealsm ,eisz dan tuhs hiwt a erlagr malspe uoy vahe a rewol tiypirobabl of imagkn a ypeT II rroer
    • oePwr nac sola be nascirdee by neiscganir cdepxeet fcfeet zsei ro iagreinnsc rcs.oipnie It si neeingsittr ot nteo cauycrac ash no efftec on .rowpe

20F2A0 2p63

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cheesetouch  2810AF p528 +

  • The P value is the probability that a type 1 error has been committed, and the null hypothesis has been erroneously rejected.

  • A P value of 0.05 or less is considered statistically significant.


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