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the police officer also gathered data on the speedsx, in kilometers per hour (km/h) of some cars as they drove down the hill towards her car. the speed limit is 50 km/h. Analysis of the results showed that the speeds of cars were normally distributed with a mean speed of 56 km/h and a standard deviation of 8 km/h

Cars that exceed the speed limit by 10km/h or more are photographed by a hidden camera. in peak traffic 495 cars pass the camera. how many would be expected to be photographed?

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