<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#Saudações a todos os usuários do software R,</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#para se calcular probabilidades da distribuição normal com 1 variável pode-se fazer o seguinte:</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span
class="Apple-style-span" style="font-size: 16px;">#Suponha X~N(100,100), logo:</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"> </span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">pnorm(95, 100, 10);# = P(X < 95)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">pnorm(110, 100, 10) - pnorm(90, 100, 10); # = P(90 < X < 110)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">pnorm(95, 100, 10, lower=F);# = P(X > 95)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span"
style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"> </span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#Gostaria de saber como são calculadas probabilidades com 2 variáveis:</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#Exemplo:</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"># X ~ N(100,20) e Y ~ N(80,10) em que X e Y são independentes.</span></font></div><div><font
class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#P(X>80;Y>80)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#P(x<100;Y>85)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">#P(85<X<105;75<Y<80)</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">Muito
Obrigado.</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">Desejo-lhes uma excelente semana !</span></font></div><div><font class="Apple-style-span" face="arial, helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 16px;">Alex</span></font></div></div></div></body></html>