Mathematics, 29.12.2019 17:31, Malari4445

Pls will give brainliest and 99 !
the mean is 60 with a standard deviation of 4. at least what fraction of the numbers are between the following pair of numbers? 40 and 80

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Pls will give brainliest and 99 !
the mean is 60 with a standard deviation of 4. at least wh...