document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=138545>Question 138545</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A paired difference test is being conducted involving 19 pairs of observations. What is the number of degrees of freedom for the test statistic?<BR>\n" );
document.write( "a.       18<BR>\n" );
document.write( "b.       19<BR>\n" );
document.write( "c.       37<BR>\n" );
document.write( "d.       38<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #101122 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=101122\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You should use a t-test with 18 degrees of freedom.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );