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Xavier earned a score of 475 on Exam A that had a mean of 550 and a standard deviation of 25. He is about to take Exam B that has a mean of 550 and a standard deviation of 100. How well must Xavier score on Exam B in order to do equivalently well as he did on Exam A? 

 Jan 13, 2021

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Score 475 is   three standard deviations below the mean of 550   ( 25 x 3 )

  three standard deviations below 550 mean on exam B would be   550 - 3*100 = 250

 Jan 13, 2021
 #1
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+1
Best Answer

Score 475 is   three standard deviations below the mean of 550   ( 25 x 3 )

  three standard deviations below 550 mean on exam B would be   550 - 3*100 = 250

Guest Jan 13, 2021

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