When Audrey runs the 400 meter dash, her finishing times are normally distributed with a mean of 68 seconds and a standard deviation of 3 seconds. Using the empirical rule, determine the interval of times that represents the middle 68% of her finishing times in the 400 meter race.

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02-10-2022
Mathematics

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When Audrey runs the 400 meter dash, her finishing times are normally distributed with a mean of 68 seconds and a standard deviation of 3 seconds. Using the empirical rule, determine the interval of times that represents the middle 68% of her finishing times in the 400 meter race.

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