document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320411>Question 320411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plant distills liquid air to produce oxygen, nitrogen and argon. The percentage of impurity in the oxygen is thought to be linearly related to the amount of impurities in the air as measured by the \"pollution count\" in parts per million (ppm). A sample of plant operating data is shown below:\r<BR>\n" );
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document.write( "Purity (%)	Pollution count<BR>\n" );
document.write( "93.3	        1.1<BR>\n" );
document.write( "92	        1.45<BR>\n" );
document.write( "92.4	        1.36<BR>\n" );
document.write( "91.7	        1.59<BR>\n" );
document.write( "94	        1.08<BR>\n" );
document.write( "94.6	        0.75<BR>\n" );
document.write( "93.6	        1.2<BR>\n" );
document.write( "93.1	        0.99<BR>\n" );
document.write( "93.2	        0.83<BR>\n" );
document.write( "92.9	        1.22<BR>\n" );
document.write( "92.2	        1.47<BR>\n" );
document.write( "91.3	        1.81<BR>\n" );
document.write( "90.1	        2.03<BR>\n" );
document.write( "91.6	        1.75<BR>\n" );
document.write( "91.9	        1.68\r<BR>\n" );
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document.write( " Fit a simple linear regression model to the data. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229466 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229466\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C+80%2C100%2C-1%2C3%2C+grid%281%29%2C%0D%0Acircle%28+93.3%2C+1.1%2C+0.3%29%2C%0D%0Acircle%28+92%2C+1.45%2C+0.3%29%2C%0D%0Acircle%28+92.4%2C+1.36%2C+0.3%29%2C%0D%0Acircle%28+91.7%2C+1.59%2C+0.3%29%2C%0D%0Acircle%28+94+%2C1.08%2C+0.3%29%2C%0D%0Acircle%28+94.6%2C+0.75%2C+0.3%29%2C%0D%0Acircle%28+93.6%2C+1.2%2C+0.3%29%2C%0D%0Acircle%28+93.1%2C+0.99%2C+0.3%29%2C%0D%0Acircle%28+93.2%2C+0.83%2C+0.3%29%2C%0D%0Acircle%28+92.9%2C+1.22%2C+0.3%29%2C%0D%0Acircle%28+92.2%2C+1.47%2C+0.3%29%2C%0D%0Acircle%28+91.3%2C+1.81%2C+0.3%29%2C%0D%0Acircle%28+90.1%2C+2.03%2C+0.3%29%2C%0D%0Acircle%28+91.6%2C+1.75%2C+0.3%29%2C%0D%0Acircle%28+91.9%2C+1.68%2C+0.3%29%2C%0D%0Agraph%28300%2C300%2C80%2C100%2C-1%2C3%2C0%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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