document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162161>Question 1162161</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm). Listed below are the amounts of mercury​ (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 99​% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna​ sushi?<BR>\n" );
document.write( "0.58  0.72  0.09  0.95  1.36  0.55  0.84 \r<BR>\n" );
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document.write( "What is the confidence interval estimate of the population mean mu​? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785910 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=785910\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean of these values is 0.727 ppm with s=0.392 ppm<BR>\n" );
document.write( "The half-interval for 99%CI is t df=6 0.995*s/sqrt (n), and t=3.707<BR>\n" );
document.write( "the interval then is 0.549<BR>\n" );
document.write( "the CI is then mean +/- that or (0.178, 1.276) units ppm.  Because 1 ppm is in the interval one may conclude that there is too much mercury in the sushi<BR>\n" );
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