document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=362855>Question 362855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A quiz cosists of 20 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 40 % </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #258649 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=258649\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To pass the test he has to get at least 8 correct answers (40% of 20).  The probability of a correct answer is 1/5 = 0.20, a wrong answer, 4/5 = 0.80.<BR>\n" );
document.write( "Therefore the probability that he passes is <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1+-+%28matrix%282%2C1%2C20%2C0%29%29%2A0.20%5E0%2A0.80%5E20++-%28matrix%282%2C1%2C20%2C1%29%29%2A0.20%5E1%2A0.80%5E19+-%0D%0A%28matrix%282%2C1%2C20%2C2%29%29%2A0.20%5E2%2A0.80%5E18 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > - ... -<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%282%2C1%2C20%2C7%29%29%2A0.20%5E7%2A0.80%5E13 ALIGN=MIDDLE  ALT=\"%28matrix%282%2C1%2C20%2C7%29%29%2A0.20%5E7%2A0.80%5E13\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );