document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162320>Question 1162320</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A grocer wants to test if the mean amount of money spent by all customers at his store is less than $100. Determine the value of the test statistic at the 0.01 significance level if a sample of 20 people produced a mean of $98 with a standard deviation of $3. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #786258 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=786258\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the test statistic is a t(0.99, df=19)=(x bar-mean)/s/sqrt (n)<BR>\n" );
document.write( "this is t=(98-100)/$3/sqrt(20)<BR>\n" );
document.write( "=-2*sqrt(20)/3<BR>\n" );
document.write( "=-2.98 </SPAN>\n" );
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