document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1133950>Question 1133950</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( "0.59  0.68  0.10  0.98  1.37  0.55  0.97  <BR>\n" );
document.write( "What is the confidence interval estimate of the population mean mu​?\r<BR>\n" );
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document.write( "_ppm < mu < _ ppm<BR>\n" );
document.write( "​(Round to three decimal places as​ needed.)<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 #751238 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=751238\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean is 5.24/7=0.749<BR>\n" );
document.write( "sd=0.404<BR>\n" );
document.write( "CI percentage not given.  Will use 95%, although with mercury, one might want a higher confidence.<BR>\n" );
document.write( "t 0.975,df=6 is 2.447<BR>\n" );
document.write( "half-interval is t*s/sqrt(n)=2.447*0.404/sqrt(7)=0.374<BR>\n" );
document.write( "95%CI is (0.375, 1.123) units ppm </SPAN>\n" );
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