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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(1781)
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nI posteshhiy ttsngi,e the hplaa evlua is teh ptoiylaribb of inkagm a Teyp I rrero. Tshi si eth teyp fo rrero tinemnoed in eth nesqo.uit

  • yepT I reror - uyo dfin a eicfdnfree hwen a edrnecfeif s'oentd lrelay tei.sx
    • nOe awy fo rmereibngme sith is ahtt sith si waht sestsnicti twan"" ot k:eam hyte twan to indf a nnaitifcgis dieeffernc in erhit ,aatd tsuh it is the ifsrt" mt"akesi htde'y mk.ae
    • ahApl si eht tyibiorpbla ouy rae ilwling to caeptc htta yuo locud have edam a yetp I error i.e(. an hapal ulaev of 500. ensma eerth si a 5% itpbbiyoral you lcudo ekma a tpye I reorr and jtecre eth llun istepyhosh when ouy dhlsuo ton)

  • yepT II rrreo - oyu od otn nfid a cenefridfe whne uyo solduh hvae scebaue a rteu efrecedfni aelyrl stesxi
    • Beta si teh tlpobyraibi atht uyo kmea a pety II eorrr
    • rPeow is eauql ot 1( - bt)ea
    • oPwer nac eb acinersde yb ecnnargsii pemsla isz,e nda suht itwh a erlrga sempla oyu evha a reolw brptiybialo of mngika a eTyp II erorr
    • Powre cna slao eb srienedca yb igrsnnicae eetpexcd ecfetf izes ro nsercanigi cn.oierspi tI is trsntegiein ot ento yaacucrc has no efftec on oew.rp

220F0A 2p36

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cheesetouch  2F8A10 582p +

  • 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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