document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206825>Question 1206825</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An important factor in selling a residential property is the number of people who look through the home. A sample of 10 homes recently sold in the Halifax, Nova Scotia, area revealed the mean number looking through each home was 15 and the standard deviation of the sample was 2 people. Develop a 90% confidence interval for the population mean. (Round the final answers to 2 decimal places.)\r<BR>\n" );
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document.write( "Confidence interval for the population mean is between <BR>\n" );
document.write( "13.95<BR>\n" );
document.write( " and <BR>\n" );
document.write( "19.64<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 #844490 by </B><A HREF=/tutors/aboutme.mpl?userid=fcabanski><B>fcabanski(1391)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fcabanski><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=844490\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For 90% confidence interval, z value is 1.645. You have to know it, look it up.\r<BR>\n" );
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document.write( "z*(stddev/squareroot(n)) = the margin of error (MOE)\r<BR>\n" );
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document.write( "n is sample size.\r<BR>\n" );
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document.write( "Mean +/- MOE is the confidence interval.\r<BR>\n" );
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document.write( "15 +/- 1.645*(2/sqrt(10)) = about 13.96 to 16.04 </SPAN>\n" );
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