document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1185173>Question 1185173</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A researcher wishes to test the effects of excerise on the ability to complete a basic skills test. He designs a pre-test and post-test to give to each participant. You believe that there was a difference in the scores. You believe the population of the differences is normally distributed, but you do not know the standard deviation. When calculating difference use Post-test minus Pre-test.\r<BR>\n" );
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document.write( "pre-test   post-test<BR>\n" );
document.write( "68	     71<BR>\n" );
document.write( "81	     79<BR>\n" );
document.write( "88	     78<BR>\n" );
document.write( "64	     64<BR>\n" );
document.write( "53	     56<BR>\n" );
document.write( "54	     58<BR>\n" );
document.write( "99	     106<BR>\n" );
document.write( "68	     59<BR>\n" );
document.write( "57	     58<BR>\n" );
document.write( "99	     93\r<BR>\n" );
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document.write( "The test statistic is: ____\r<BR>\n" );
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document.write( "The p-value is: _____<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 #815939 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=815939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a paired t-test.<BR>\n" );
document.write( "The test statistic is t (0.975, df=9); d(the mean)<BR>\n" );
document.write( "values are (x2-x1); 3,-2,-10,0,3,4,7-9,1,-6<BR>\n" );
document.write( "d=-0.9 with sd=5.74<BR>\n" );
document.write( "critical value is -0.49<BR>\n" );
document.write( "p-value = 0.63 for a two way test. </SPAN>\n" );
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