SOLUTION: In a National Achievement Test, the mean was found to be 75 and the standard deviation was 15. The scores also approximate the normal distribution. What is the two extreme scores o
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Question 1202138: In a National Achievement Test, the mean was found to be 75 and the standard deviation was 15. The scores also approximate the normal distribution. What is the two extreme scores outside of which 15% of the group are expected to fall? Answer by ikleyn(52848) (Show Source):
