[Solution Library] A study conducted under the auspices of the National Highway Traffic Safety Administration (NHTSA) found that the average number of crashes
Question: A study conducted under the auspices of the National Highway Traffic Safety Administration (NHTSA) found that the average number of crashes caused by drowsy drivers each year was 1500. Assume the number of fatal crashes per year is normally distributed with a standard deviation of 300. Suppose 2100 fatal crashes occur in the year 2009. Is it correct to say that the rate of crashes for the year 2006 was in the top 5% of all years for fatal crashes?
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