document.write( "Question 949888: A professor finds that the scores on a History exam are known to be normally distributed with mean and standard deviation of 55 and 15, respectively. Determine the passing score if 95% of the students are to clear the course. \n" ); document.write( "
Algebra.Com's Answer #579951 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A professor finds that the scores on a History exam are known to be normally distributed with mean and standard deviation of 55 and 15, respectively. Determine the passing score if 95% of the students are to clear the course. \n" ); document.write( "--------------------- \n" ); document.write( "Find the z-score with a left-tail of 5% \n" ); document.write( "invNorm(0.05) = -1.645 \n" ); document.write( "------- \n" ); document.write( "Find the corresponding score:: \n" ); document.write( "x = -1.645*15 + 55 = 30.32 \n" ); document.write( "---------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------- \n" ); document.write( " |