document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1085206>Question 1085206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> THE ENVIRONMENTAL PROTECTION OFFICER OF A LARGE INDUSTRIAL PLANT SOUGHT TO DETERMINE THE MEAN DAILY AMOUNT OF SULPHUR OXIDE (POLLUTANT)EMMITED BY THE PLANT. BECAUSE  MEASURMENTS COSTS WERE HIGH, ONLY A RANDOM SAMPLE 10 DAYS MEASURMENTS WERE OBTAINED : THESE WERE , IN TONS PER DAY.<BR>\n" );
document.write( "8	7	10	15	11	5	8	5	13	12<BR>\n" );
document.write( "SUPPOSE EMISSIONS PER DAY ARE NORMALLY DISTRIBUTED. ESTIMATED µ, THE MEAN AMOUNT OF SULPHUR OXIDES EMITTED PER DAY USING THE CONFIDENCE INTERVAL WITH A CONFIDENCE<BR>\n" );
document.write( "COEFFICIENT OF 0.95 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #699277 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=699277\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean is 9.4 tons<BR>\n" );
document.write( "std dev is 3.37 tons<BR>\n" );
document.write( "the interval width is t df=9, 0.975*s/sqrt(n)<BR>\n" );
document.write( "t is 2.26<BR>\n" );
document.write( "2.26*3.37/sqrt(10)=2.41<BR>\n" );
document.write( "The 95% CI is (6.99, 11.81) tons. </SPAN>\n" );
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