document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1167457>Question 1167457</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose you are taking a 10--question quiz where each question has four possible answers. What's the probability that you will get at most 3 questions right? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #792022 by </B><A HREF=/tutors/aboutme.mpl?userid=VFBundy><B>VFBundy(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=VFBundy><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=VFBundy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=792022\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Probability of getting exactly three questions right:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%280.25%29%5E3+%2A+%280.75%29%5E7+%2A+%2810%21%2F%283%21%2A7%21%29%29 ALIGN=MIDDLE  ALT=\"%280.25%29%5E3+%2A+%280.75%29%5E7+%2A+%2810%21%2F%283%21%2A7%21%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 0.2503<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of getting exactly two questions right:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%280.25%29%5E2+%2A+%280.75%29%5E8+%2A+%2810%21%2F%282%21%2A8%21%29%29 ALIGN=MIDDLE  ALT=\"%280.25%29%5E2+%2A+%280.75%29%5E8+%2A+%2810%21%2F%282%21%2A8%21%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 0.2816<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of getting exactly one question right:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%280.25%29%5E1+%2A+%280.75%29%5E9+%2A+%2810%21%2F%281%21%2A9%21%29%29 ALIGN=MIDDLE  ALT=\"%280.25%29%5E1+%2A+%280.75%29%5E9+%2A+%2810%21%2F%281%21%2A9%21%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 0.1877<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of getting exactly zero questions right:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%280.75%29%5E10 ALIGN=MIDDLE  ALT=\"%280.75%29%5E10\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 0.0563<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of getting \"at most three\" questions right:<BR>\n" );
document.write( "0.2503 + 0.2816 + 0.1877 + 0.0563 = <b>0.7759</b> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );