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*IF* the mean score is 100 and the standard deviation is 15, then:
66.8% of people score between 85-115
95% of people score between 70-130
99.7% of people score between 55-145
*IF* the mean score is 100 and the standard deviation is 25, then:
66.8% of people score between 75-125
95% of people score between 50-150
99.7% of people score between 25-175
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Brian Griffin: Ah, if my memory serves me, this is the physics department.
Chris Griffin: That would explain all the gravity.
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