Question: In a certain distribution, the mean is 80 with a standard deviation of 2. At least what fraction of the numbers are between the following

In a certain distribution, the mean is 80 with a standard

$deviation of 2. At least what fraction of the numbers are between$

In a certain distribution, the mean is 80 with a standard deviation of 2. At least what fraction of the numbers are between the following pair of numbers? 72 and 88

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