SOLUTION: Scores on a math midterm are distributed under a standard normal curve. A randomly selected had a score of 55, which represented a z score of -2.35. If the mean for the exam was 76

Question 627336: Scores on a math midterm are distributed under a standard normal curve. A randomly selected had a score of 55, which represented a z score of -2.35. If the mean for the exam was 76, determine the standard deviation for the exam.
Does one have to use a graphing calculator to solve most of these types of question?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi, Calculator will do

*Note: 

  z =  = -2.35

          SD =  = 8.9362  

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