document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1082860>Question 1082860</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Listed below are systolic blood pressure measurements&#8203; (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.10 significance level to test for a difference between the measurements from the two arms. What can be&#8203; concluded?\r<BR>\n" );
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document.write( "Right arm<BR>\n" );
document.write( "142<BR>\n" );
document.write( "131<BR>\n" );
document.write( "137<BR>\n" );
document.write( "133<BR>\n" );
document.write( "133<BR>\n" );
document.write( "  <BR>\n" );
document.write( "Left arm<BR>\n" );
document.write( "167<BR>\n" );
document.write( "160<BR>\n" );
document.write( "175<BR>\n" );
document.write( "137<BR>\n" );
document.write( "139\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #696884 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=696884\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a paired t-test with df=4<BR>\n" );
document.write( "The differences are 25,29,38,-4,6<BR>\n" );
document.write( "Here, a t-test is done with only df=4, but the variability is only in the BP for one person, not 5.<BR>\n" );
document.write( "The critical value is |t|>2.776<BR>\n" );
document.write( "the actual value is x bar=20.4, s=14.8<BR>\n" );
document.write( "t=3.073<BR>\n" );
document.write( "p-value is 0.037<BR>\n" );
document.write( "This is significant at the 0.10 level.<BR>\n" );
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