document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=696172>Question 696172</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let X be the number ofcorrect answers if a students guesses randomly from the 5 choices for each of the 25 questions. What is the probability distribution of X? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428833 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=428833\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let X be the number ofcorrect answers if a students guesses randomly from the 5 choices for each of the 25 questions. What is the probability distribution of X?<BR>\n" );
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document.write( "It's a binomial distribution with <BR>\n" );
document.write( "u = np = 25*(1/5) = 5<BR>\n" );
document.write( "and<BR>\n" );
document.write( "s = sqrt(npq) = sqrt(5(4/5)) = 2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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