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The speeds of cars on the highway have a mean of 95 with a standard deviation of 3 km/h a) What percentage of cars averaged

The speeds of cars on the highway have a mean of 95 with a standard deviation of 3 km/h

a) What percentage of cars averaged less than 85 km/h?

b) If a police car stopped cars that were going more than 100 km/h how many cars would they stop if there were 8000 cars on the highway?

c) what percentage of cars travel between 90 km/h and 100 km/h?

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