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If a Class's Scores Are Normally Distributed,with a Mean of 70

Question 16

Multiple Choice

If a class's scores are normally distributed,with a mean of 70 and a standard deviation of 10,what are the upper and lower limits of the middle 68% of the class?


A) 50 and 90
B) 40 and 100
C) 60 and 80
D) 32 and 68

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