document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=329409>Question 329409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A Multiple-choice test has 15 questions with each having 4 possible answers with one correct. Assume a student randomly guesses the  answer to every question.\r<BR>\n" );
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document.write( "a. What is the probability of getting exactly 5 correct answers?<BR>\n" );
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document.write( "b. What is the probability of getting less than 6 correct answers?\r<BR>\n" );
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document.write( "I have to have this in by TODAY - August 6th, 2010. Please help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #236122 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=236122\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A Multiple-choice test has 15 questions with each having 4 possible answers with one correct. Assume a student randomly guesses the answer to every question.<BR>\n" );
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document.write( "Binomial Problem with n=15 and p = 1/4<BR>\n" );
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document.write( "a. What is the probability of getting exactly 5 correct answers?<BR>\n" );
document.write( "P(x= 5) = 15C5*(1/4)^5*(3/4)^10 = binompdf(15,1/4,5) = 0.1651<BR>\n" );
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document.write( "b. What is the probability of getting less than 6 correct answers? <BR>\n" );
document.write( "P(less than 6) = binomcdf(15,1/4,5) = 0.8516<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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