What percentage of cars are exceeding the speed limit


The speed limit on Interstate is 65mp. The mean speed of cars is measured @ 63, with a standard deviation of 8 mph. If the speeds are normally distributed, what percentage of cars are exceeding the speed Limit? If police decide to ticket cars exceeding 72mph what percentage of the motorist are ticketed?

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Basic Statistics: What percentage of cars are exceeding the speed limit
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