document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=483987>Question 483987</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The manager of a large guest house has received complaints that female guests are provided with less prompt service upon approaching the front desk. In observing a sample of 34 male guests, he finds an average of 15.2 seconds with a standard deviation of 5.9. For a sample of 39 female guests, the mean and the standard deviation were 17.4 and 6.4 seconds respectively. Assume equal population standard deviations.<BR>\n" );
document.write( "What is the standard error of x¯1 - x¯2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #331195 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=331195\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In observing a sample of 34 male guests, he finds an average of 15.2 seconds with a standard deviation of 5.9. For a sample of 39 female guests, the mean and the standard deviation were 17.4 and 6.4 seconds respectively. Assume equal population standard deviations.<BR>\n" );
document.write( "What is the standard error of x¯1 - x¯2<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "SE = sqrt[5.9^2/34 + 6.4^2/39] = 1.4402<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );