document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=293096>Question 293096</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if a student randomly guesses at 20 multiple choice questions find the probability that the student gets exactly 5 correct? each question has 4 possible choices.\r<BR>\n" );
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document.write( "B. student gets at MOST 5 correct?<BR>\n" );
document.write( "C. student gets MORE than 7 correct?<BR>\n" );
document.write( "D. Student gets at LEAST 8 correct? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #211596 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=211596\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  if a student randomly guesses at 20 multiple choice questions find the probability that the student gets exactly 5 correct? each question has 4 possible choices.<BR>\n" );
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document.write( "Binomial Problem with n=20; p = 1/4<BR>\n" );
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document.write( "I use a TI calculator to get the following:<BR>\n" );
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document.write( "B. student gets at MOST 5 correct?<BR>\n" );
document.write( "binomcdf(20,1/4,5) = 0.6172<BR>\n" );
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document.write( "C. student gets MORE than 7 correct?<BR>\n" );
document.write( "1 - binomcdf(20,1/4,7) = 0.8982<BR>\n" );
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document.write( "D. Student gets at LEAST 8 correct?<BR>\n" );
document.write( "same answer as \"C\"<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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