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At one college, the distributions of GPA's is bell- shaped with a mean of 2.8...

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At one college, the distributions of GPA's is bell- shaped with a mean of 2.8 and a standard deviation of 0.4.According to the Empirical rule, about what percentage of students at the college have a GPA between 2.4 and 3.2?99.74%95.44%84.13%68.26%

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