document.write( "Question 321195: The ages (in years) of seven people and the number of days they spent recovering in the hospital after surgery are given in the following table.\r
\n" ); document.write( "\n" ); document.write( " Age, x 12 21 38 44 59 63 70
\n" ); document.write( "Days in Hospital, y 4 6 7 5 9 11 12 \r
\n" ); document.write( "\n" ); document.write( " Using the regression line, predict the value of y for x = 30.
\n" ); document.write( "

Algebra.Com's Answer #230025 by stanbon(75887)\"\" \"About 
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The ages (in years) of seven people and the number of days they spent recovering in the hospital after surgery are given in the following table.
\n" ); document.write( "Age, x 12 21 38 44 59 63 70
\n" ); document.write( "Days in Hospital, y 4 6 7 5 9 11 12
\n" ); document.write( "Using the regression line, predict the value of y for x = 30.
\n" ); document.write( "----
\n" ); document.write( "Equation:
\n" ); document.write( "f(x) = 0.1248x+2.242
\n" ); document.write( "---
\n" ); document.write( "f(10) = 3.49
\n" ); document.write( "===================
\n" ); document.write( "Cheers,
\n" ); document.write( "stan H.
\n" ); document.write( "
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