document.write( "Question 791178: to verify whether a course is research methodology improved performance, a similar test was given to 12 participants before and after the course. the original marks and after the course marks are given below:
\n" ); document.write( "original marks marks after the course
\n" ); document.write( "44 53
\n" ); document.write( "40 38
\n" ); document.write( "61 69
\n" ); document.write( "52 57
\n" ); document.write( "32 46
\n" ); document.write( "44 39
\n" ); document.write( "70 73
\n" ); document.write( "41 48
\n" ); document.write( "67 73
\n" ); document.write( "72 74
\n" ); document.write( "53 60
\n" ); document.write( "72 78\r
\n" ); document.write( "\n" ); document.write( "was the course useful? Consider these 12 participant as a sample from a population.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #479421 by psbhowmick(878) $\"\"$ $\"About$

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Perform a linear simple regression analysis. Find the equation and then check if the population slope is positive or negative and base your conclusion on that. \n" ); document.write( "

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