document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1102141>Question 1102141</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a survey of 97 randomly selected homeowners found the the mean amount spent on lawn service was $720 per year. construct a 98% confidence interval for the mean amount of money spent on lawn service per household per year. assume the population standard deviation was $123 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #716788 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=716788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  a survey of 97 randomly selected homeowners found the the mean amount spent on lawn service was $720 per year. construct a 98% confidence interval for the mean amount of money spent on lawn service per household per year. assume the population standard deviation was $123 <BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "sample mean = $720<BR>\n" );
document.write( "ME = 2.3263*123/sqrt(97) = 29.05<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "98% CI:: 720-29.05 < u < 720+29.05<BR>\n" );
document.write( "98% CI:: 690.95 < u < 749.05<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );