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Mathematics, 25.04.2020 00:40 Busm6073

1 Is lack of sleep causing traffic fatalities? A study conducted under the auspices of the National Highway Traffic Safety Administration found that the average number of fatal crashes caused by drowsy drivers each year was 1550 (BusinessWeek, January 26, 2004). Assume the annual number of fatal crashes per year is normally distributed with a standard deviation of 300. What is the probability of fewer than 1000 fatal crashes in a year?

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