document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=145045>Question 145045</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 10-year study conducted by the American Heart Association provided data on how age related to the risk of strokes.  Suppose that the following data was obtained in a follow-up study. Risk is interpreted as the probability that the patient will have a stroke over the next 10-year,<BR>\n" );
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document.write( "Patient	Risk	Age<BR>\n" );
document.write( "1	12	57<BR>\n" );
document.write( "2	24	67<BR>\n" );
document.write( "3	13	58<BR>\n" );
document.write( "4	56	86<BR>\n" );
document.write( "5	28	59<BR>\n" );
document.write( "6	51	76<BR>\n" );
document.write( "7	31	78<BR>\n" );
document.write( "8	18	56<BR>\n" );
document.write( "9	37	80<BR>\n" );
document.write( "10	15	78<BR>\n" );
document.write( "11	22	71<BR>\n" );
document.write( "12	36	70<BR>\n" );
document.write( "13	15	67<BR>\n" );
document.write( "14	48	77<BR>\n" );
document.write( "15	15	60<BR>\n" );
document.write( "16	36	82<BR>\n" );
document.write( "17	8	66<BR>\n" );
document.write( "18	34	80<BR>\n" );
document.write( "19	3	62<BR>\n" );
document.write( "20	37	59\r<BR>\n" );
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document.write( "a)	Develop an estimated regression equation that can be used to relate the risk of a stroke to the person’s age.<BR>\n" );
document.write( "b)	Is the relationship between risk and age significant at the 95% confidence level?<BR>\n" );
document.write( "c)	Compute the correlation coefficient and interpret the result.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #105736 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=105736\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This was answered yesterday.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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