document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1193227>Question 1193227</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The growing seasons for a random sample of 35 U.S. cities were recorded, yielding a sample mean of 190.7 days and the population standard deviation of 54.2 days. Estimate the true mean population of the growing season with 95% confidence.\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 #825321 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=825321\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 95% half-interval is z(0.975)*sigma/sqrt(n)=1.96*54.2/sqrt(35)=17.96 days<BR>\n" );
document.write( "if I round to 18.0 days<BR>\n" );
document.write( "(172.7, 208.7) days is the 95% interval. </SPAN>\n" );
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