Mathematics, 13.03.2020 23:52, whackybrother24

At an intersection, the red-light times are normally distributed with a mean time of 3
minutes and a standard deviation of 0.25 minutes. Using the empirical rule,
approximately what percent of red lights last between 2.5 and 3.5 minutes?

Answers: 2

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At an intersection, the red-light times are normally distributed with a mean time of 3
minutes...