need help with your account or subscription? click here to email us (or see the contact page)
join telegramNEW! discord
jump to exam page:
search for anything ⋅ score predictor (โ€œpredict me!โ€)

You must be logged in to vote!
Retired NBME 20 Answers

nbme20/Block 3/Question#1 (reveal difficulty score)
The frequency of an autosomal recessive ...
1/25 ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biostats

 Login (or register) to see more


 +16  upvote downvote
submitted by jotajota94(14)
The site was recently locked๐Ÿ”’
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

eUs eht rridH-yngWebae qeionuat

  1. kaTe teh quares toro fo 60/011, dna taht wlli veig you eht uycerenqf fo teh rsevieesc leella = 014./
  2. aCtuellca hte enqceuryf fo eht tionnmda elalel iwht =p,1q+ hiwch si =p .975.0
  3. hTey era elintgl ouy ot celcuaatl teh ycqnefeur of the asdsiee arrrsic,e hcihw si hitw eht oteuniqa q.2p
  4. Teyh tnaw yonl eth saeseid asrrierc ni whcih eloeditn si tenper.s oT utlcaleca ,tshi sue hte q eavul /4()01 dan ytllpmiu by %80 ni sith usoldh eivg ouy ..002
  5. i,Fynlal ltcuaeacl for 2 Pq2 0(9=..)70(25)0 400. = 52./1
unscramble the site ⋅ become a member$279$49
yex  e!Nic na..d. we ear edpspous ot edra the tesm dna od lal tish in a niutme or so? /-: +28
charcot_bouchard  eAllel rnqceeyfu 40./1 so acreirr freq .02/1 80% fo 2/10 si /512 (0/8100 x )2/10 +15
dickass  hA cefk, q2p tgo me +1
hello_planet  A ahndy trhoucts orf br-dirWeegaHny si tath yuo ngyraelle nac emssua p ~= 1 if q fi yialrf l.wo It oals dsent ot be aresei ot rowk in icarostnf if eht newsra ichsoec era ni fnsioartc so ouy ontd' have ot ouecnb bcak adn frhot teeebwn facoisntr nda sal.micde So hwit atht, you ndes pu iwth q2p = 2 * 1 * 5/10 = 50/2 = 5.1/2 +9
topgunber  haet this helow mceblasr i:gtnh n I neo lei:n 2 * q * T%08i sh. is ofr edsideas idlidsuvain wot( q ls.eeIal)l = 0611/0 = ^qe2T h yuneqferc fo q = w/N0o14 irserrca si 2 p .q P is cseol to eon nsmgsaui HW eqm +p().=1q heerT's an aaiildtodn tesp in hits iqntoesu eud ot eht owt fndeeitrf omoatssuit n. q2)( = 20/1. 0%8 fo eetsh criearsr rea eenlsdito os mltluypi /120 * 8.0 = 15/2 +

@usmlecrasher

1/40 = .025 = q P + q = 1 -> P + .025 = 1 -> P= 0.975

+3/- alexp1101(11)

You must be logged in to vote!

 +2  upvote downvote
submitted by โˆ—topgunber(68)
The site was recently locked๐Ÿ”’
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

teha sthi whleo msrlceba ig:hnt n I noe n:eil 2 * q * 80%.

iTsh si for sdsieeda niaduivdsil tw(o q leles.)aIl = 06101/ = ^hTq e2 nyrucqeef fo q = 1/40

Now rceairsr si 2 p q. P si csloe to eno nimgauss HW mqe q(+).p=1 es'herT an taadildoin sept in hsit qieounst due ot the otw feerdtinf saottinu.m

so )(q2 = 0.2/1 8%0 fo eseth irsrarec aer seeitdoln so tulmilyp /021 * 08. = /152

unscramble the site ⋅ become a member$279$49


You must be logged in to vote!

 +0  upvote downvote
submitted by thechillhill(1)
The site was recently locked๐Ÿ”’
It can be re-accessed by making a purchase.

Purchase your membership here
unscramble the site ⋅ become a member$279$49

p + q = 1 2p^ + 2pq + ^q2 = 1 fi ^q2 = /61010 = 0003.60 tn he q = qt)^(r2qs = 502.0 eov sl fro p to teg p = 1 - r = 1 - 0520. = 7.950 teh szeuyoethrgo rirsreca = 2pq = 1 - p^2 = 1 - 9.50 = .05 2 ^q can be edpprod /cb 'sit mhuc llrsame tanh ^p.2 Teh deltoien si iperesbnlso fro 0%8 of eth namstit.ou 8 0. x .50 = 40.0 = 400/1 = /512

Tehre gitmh be an asieer awy to od sh,ti ubt ti eorkwd fro m.e

unscramble the site ⋅ become a member$279$49
thechillhill  oS pyanrelapt I ndto' wonk hwo to aftmor vyre lw.el ro!Sry +1
pakimd  So caesube i toudlcn psned emro ahtn a tmeiun on thsi ioqsneut nda tylnoehs ditdn ellrac eth grH-eienaWdrby ieanuotq tish is owh i lvdeso it dunre a mensuo :ti yuo kwno in a ivnge oupnlapiot lfha fo tehm wlil be ascrrrei insec ist an mtolauaos riesvesec deeisas aA a=A AA aa aA a oAs fo atth lhfa %08 aer edu ot odnltiee tsoainutm nda 0%2 era deu ionpt tmitsb yonau ttha iglco 08% fo alfh toin %20 fo fhal wlli iveg you 15/2 +1
draykid  80. x 05. is .04 +
topgunber  teah hits lhwoe mrecsabl gt:nih n I one lne:i 2 * q * 8hT.0si% is ofr iseadeds ivunlisdadi otw( q elIelas)l. = 60/110 = 2Tqh^e eynreqfuc fo q = w 0/4No1 irecrsar si 2 p .q P is solec ot eon msuignas WH eqm ).=1(pq+ hr'seTe an loaidiadtn tpes in sith stiueqno ude to eht wto idfernfet oto nasuis.mt )2q( = /0.21 %80 of ehtes asrcrrei aer ilestedon so luytiplm 210/ * 80. = 21/5 +


You must be logged in to vote!

Must-See Comments from nbme20

amorah on Cytomegalovirus infection
masonkingcobra on Contact with parakeets
hayayah on Capillary hydrostatic: increased; ...
hayayah on X chromosome-linked isoenzymes
medbitch94 on Mannose 6-phosphate
hello on Capillary hydrostatic: increased; ...
hayayah on Osteoblasts
imgdoc on Hypophosphatemia
hayayah on Missense
celeste on 50%
justgettinby on Omeprazole
andrewk1 on Cold, dry air
yotsubato on Jugular venous pressure of 12 mm Hg
strugglebus on Drug effect

search for anything NEW!