document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=545383>Question 545383</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I can't figure out how to get the p-value.<BR>\n" );
document.write( "Question:\r<BR>\n" );
document.write( "\n" );
document.write( "400 people are asked a question in a poll and 80 said yes. What is the P-value?\r<BR>\n" );
document.write( "\n" );
document.write( "I will be grateful for help, thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355575 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=355575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 400 people are asked a question in a poll and 80 said yes. <BR>\n" );
document.write( "-------<BR>\n" );
document.write( "sample proportion = p-hat = 80/400 = 1/5<BR>\n" );
document.write( "test statistic = ((1/5)-p)/sqrt[p*q/n] = ?<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "What is the P-value?<BR>\n" );
document.write( "The p-value is the probability that z is less than (or greater than)<BR>\n" );
document.write( "the test statistic.  You don't have enough information to calculate<BR>\n" );
document.write( "a p-value <BR>\n" );
document.write( "------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );