document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=917073>Question 917073</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is the situation.<BR>\n" );
document.write( " jean forgot to study for an eight-question multiple choice quiz.Each question contains four possible answers. Jean will guess the answer to each question.\r<BR>\n" );
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document.write( "a) what is the probability that she will get only two questions correct?\r<BR>\n" );
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document.write( " my thoughts: i thought that it would be binomial distribution. but i dont understand where the p and q numbers would be for the equation. <BR>\n" );
document.write( " the equation:<BR>\n" );
document.write( "               nCx * Px * (1 – P)n – x<BR>\n" );
document.write( " i believe that n would be 8 and x would be 2 however i don't understand the rest. would P be 0.25 because she only gets two right and then q would be 0.75?\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #556500 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=556500\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p is the probability of success; the probability that Jean answers a given question correctly. In this case p = 0.25 and q = 0.75, but not for the reason you stated. If the multiple choice test had five choices per question, then p = 0.2 and q = 1-p = 0.8. </SPAN>\n" );
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