document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=765100>Question 765100</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You are taking a true-false test that has ten question, and you need a score of 70 percent to pass. You know the answers to only six of the questions. For the other four, you toss a coin and answer true if it comes up heads and false if it comes up tails.\r<BR>\n" );
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document.write( "What is the probability that you will pass the exam? (Think about this as the probability of getting at least one right answer in four tries-or one minus the probability of getting four wrong answers.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #465988 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=465988\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are taking a true-false test that has ten question, and you need a score of 70 percent to pass. You know the answers to only six of the questions. For the other four, you toss a coin and answer true if it comes up heads and false if it comes up tails. <BR>\n" );
document.write( "What is the probability that you will pass the exam? <BR>\n" );
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document.write( "Ans: <BR>\n" );
document.write( "P(quessing correctly) = 1/2<BR>\n" );
document.write( "P(flipping correctly)= 1/2<BR>\n" );
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document.write( "P(pass) = 1/4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=================== </SPAN>\n" );
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