document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139076>Question 1139076</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please explain.\r<BR>\n" );
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document.write( "The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for a test. Use the regression line to predict a student’s score if the student studied for 7 hours.  \r<BR>\n" );
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document.write( "hours   5  10  4  6 10  9<BR>\n" );
document.write( "scores 64 86 69 86 59 87\r<BR>\n" );
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document.write( "Equation of the regression line: ____________________________\r<BR>\n" );
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document.write( "Prediction: ___________________________________  <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 #756863 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=756863\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Put in calculator and equation is<BR>\n" );
document.write( "y (score)=1.066 x+67.35 , where x=hours<BR>\n" );
document.write( "prediction would be y(7)=74.81 or 75<BR>\n" );
document.write( "NOTE: the r^2 is 0.05, meaning that this is not a good fit for the data.  Diagnostics would likely show that the assumptions may not be valid. </SPAN>\n" );
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