document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1187774>Question 1187774</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. Teaching Assistants' Stipends. A random sample of stipends of teaching assistants in economics is listed. Is there sufficient evidence at the alpha=0.05 level to conclude that the average stipend differs from $15,000? The stipends listed (in dollars) are for the academic year. <BR>\n" );
document.write( "14,000 18,000 12,000 14,356 13,185,13,419 14,000 11,981 17,604 12,283,16,338 15,000\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 #819189 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=819189\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ho: mean is 15000<BR>\n" );
document.write( "Ha; mean is not <BR>\n" );
document.write( "alpha=0.05 p{reject Ho|Ho true}<BR>\n" );
document.write( "Test stat is a t0.975, df=11)<BR>\n" );
document.write( "critical value |t| > 2.201<BR>\n" );
document.write( "calculation mean is $14347.17; s=$2048.54<BR>\n" );
document.write( "t=(14347.17-15000)/2048.54/sqrt (12)<BR>\n" );
document.write( "=-652.83*sqrt(12)/2048.54<BR>\n" );
document.write( "=-1.10<BR>\n" );
document.write( "fail to reject Ho; insufficient evidence to suggest the true mean is not $15,000.<BR>\n" );
document.write( "p-value=0.29 </SPAN>\n" );
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