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Mean duration of yellow lights in william sample

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Reference no: EM132413638

The mean length of a yellow light in California is about 4.5 seconds, with a standard deviation of 0.45 seconds. William Darcy selects a SRS of 100 traffic lights in California and finds that his sample has a mean yellow light time that is in the 80th percentile. Find the mean duration of yellow lights in William's sample. Round your answer to the nearest tenth of a second.

Reference no: EM132413638

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