document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=765570>Question 765570</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I will really appreciate your help with this problem. Thanks.\r<BR>\n" );
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document.write( "The data given below are the number of absences for students in a college class and the student's final grade.\r<BR>\n" );
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document.write( "Number of absences x 10 12 2 0 8 5<BR>\n" );
document.write( "Final grade y        70 65 96 94 75 82\r<BR>\n" );
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document.write( " Find the value of the correlation coefficient r. Discuss the type of relationship that appears to exist between the number of absences x and a student's final grade y.\r<BR>\n" );
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document.write( "Test the significance of the correlation coefficient using alpha=0.05.<BR>\n" );
document.write( "H0: P=0(No relationship exist between number of absences and final grade)<BR>\n" );
document.write( "Ha: p not equal to 0(A relationship exists between number of absences and final grade) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #466337 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=466337\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The data given below are the number of absences for students in a college class and the student's final grade. <BR>\n" );
document.write( "Number of absences x 10 12  2  0  8  5<BR>\n" );
document.write( "Final grade::::::: y 70 65 96 94 75 82 <BR>\n" );
document.write( "Find the value of the correlation coefficient r. Discuss the type of relationship that appears to exist between the number of absences x and a student's final grade y.<BR>\n" );
document.write( "I used my TI-84 to get r = -0.9807<BR>\n" );
document.write( "Type: Inverse::: As # of absences goes up, final grade goes down.<BR>\n" );
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document.write( "Test the significance of the correlation coefficient using alpha=0.05.<BR>\n" );
document.write( "H0: rho=0(No relationship exist between number of absences and final grade)<BR>\n" );
document.write( "Ha: rho # 0(A relationship exists between number of absences and final grade)<BR>\n" );
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document.write( "Critical value from Table A-6:::: 0.811<BR>\n" );
document.write( "Note:: |r| = 0.9807<BR>\n" );
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document.write( "Since |r| > critical value, reject Ho.<BR>\n" );
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document.write( "A significant linear relationship exixts at the 5% level of confidence.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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