document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=528255>Question 528255</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student answers all 48 questions on a multiple-choice test by guessing. Each question has four possible answers, only one of which is correct. Find the probability that the student gets exactly 15 correct answers.\r<BR>\n" );
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document.write( "(Please answer in simplest terms. I do not know complex probability equations.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #349204 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=349204\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A student answers all 48 questions on a multiple-choice test by guessing. Each question has four possible answers, only one of which is correct. Find the probability that the student gets exactly 15 correct answers. <BR>\n" );
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document.write( "Binomial Problem with n = 48 and p(correct) = 1/4<BR>\n" );
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document.write( "P(x = 15) = 48C15*(1/4)^15*(3/4)^33<BR>\n" );
document.write( "= binompdf(48,1/4,15) = 0.0767<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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